Casio 5652 User manual

Contents
Before Getting Started...
Watch Face Items
Navigating Between Modes
Mode Overview
Using the Crown
Hand and Day Indicator Movement
Solar Charging
Useful Features
Time Adjustment
Time Adjustment Using a Time Signal
Overview
Appropriate Signal Reception Location
Time Calibration Signal Reception
Ranges
Auto Time Calibration Signal Receive
Manual Time Signal Receive
Signal Reception Precautions
Using Watch Operations to Adjust the Time
Setting
Checking the Last Time Adjustment Result
Using the Watch in a Medical Facility or
Aircraft
Using Mobile Link with a
Mobile Phone
Getting Ready
Auto Time Adjustment
Configuring World Time Settings
Adjusting Hand and Day Indicator Alignment
Phone Finder
Configuring Watch Settings
Changing the Home City Summer Time Setting
Checking the Watch Charge Level
Connection
Connecting with a Phone
Canceling a Connection with a Phone
Using the Watch in a Medical Facility or
Aircraft
Unpairing
If you purchase another phone
World Time
World Time City Setting
Configuring the Summer Time Setting (World
Time)
Swapping Your Home City Time and World
Time
Stopwatch
Measuring Elapsed Time
Adjusting Hand and Day
Indicator Alignment
Adjusting Hand and Day Indicator Alignment
Moving to Another Time Zone
Other Information
City (Time Zone) List
Summer Time Table
Supported Phones
Specifications
Mobile Link Precautions
Copyrights and Registered Copyrights
Troubleshooting
Watch Operation Guide 5652
1
MA2110-EB © 2020 CASIO COMPUTER CO., LTD.

Before Getting
Started...
This section provides an overview of the watch
and introduces convenient ways it can be
used.
Note
●The illustrations included in this
operation guide have been created to
facilitate explanation. An illustration
may differ somewhat from the item it
represents.
Watch Face Items
⑤
④
①
②
③
⑥
⑦
A [C]
The second hand points to this mark while
there is a connection between the watch
and a phone.
B [RC]
The second hand points to this mark while
calibration signal reception is in progress.
C Last signal receive result/auto time
adjustment setting status
The second hand points to [Y(YES)] or
[N(NO)] to indicate the result of the last
auto time adjustment operation based on
time signal reception or connection with a
phone.
[Y(YES)]: Auto time adjustment
successful
[N(NO)]: Auto time adjustment failed
The second hand points to [Y(YES)] or
[N(NO)] to indicate if auto time adjustment
is enabled or disabled.
[Y(YES)]: Auto time adjustment enabled
[N(NO)]: Auto time adjustment disabled
D Day of week
In the Timekeeping Mode, the mode hand
points to the day of the week in the Home
City.
E Battery level
The current charge level is indicated by
the mode hand after you enter the
Timekeeping Mode.
F Summer time setting
The mode hand points to the current
summer time setting.
G [ST]
In the Stopwatch Mode, the mode hand
points to [ST].
Navigating Between Modes
Press (C) to cycle between modes.
●In any mode, hold down (C) for at least one
second to enter the Timekeeping Mode.
30
30
C
Timekeeping Mode
Stopwatch Mode
●Connecting with a Phone
Hold down (C) for at least 3.5 seconds to
establish a connection with a phone.
●To disconnect, press any button.
30 30
C
Any button
ConnectedBefore connection
Mode Overview
●Timekeeping Mode
The main hour, minute, and second hands
indicate the current time.
The small hour and minute hands indicate the
current World Time.
30
④⑤③②
①
Last Time
Adjustment Result
A Current location time (24-hour time)
One revolution every 24 hours.
B Day of the week at current location
C World Time hour
D World Time minute
E World Time hour (24-hour time)
The hand points to the A-side for a.m.
times, and to the P-side for p.m. times.
Checking the Last Time Adjustment
Result
Press (B).
lChecking the Last Time Adjustment Result
Connecting with a Phone to Adjust the
Watch’s Time
Hold down (B) for at least 0.5 seconds.
Release the button as soon as the second
hand moves from [Y/N] to [C].
Time Adjustment Using a Time Calibration
Signal
Hold down (B) for at least 1.5 seconds.
Release the button as soon as the second
hand moves from [C] to [RC].
Phone Finder
Hold down (B) for at least 4.5 seconds.
Release the button as soon as the second
hand moves from [RC] to [C].
Swapping the Current Location Time and
World Time
Hold down (A) for at least three seconds.
Checking the Charge Level
Immediately after you press (C) to return to the
Timekeeping Mode, you can check the battery
charge level by noting the mode hand
position.
lChecking the Charge Level
Watch Operation Guide 5652
2

●Stopwatch Mode
The second hand, and the small hour and
minute hands indicate the elapsed stopwatch
time.
●The main hour and minute hands indicate
the current time.
30
④
⑤
③
①②
Start/Stop
Reset
A Current location time (24-hour time)
One revolution every 24 hours.
B Stopwatch seconds
C Stopwatch minutes
D Stopwatch hours
E Stopwatch hours (24-hour time)
The hand points to the A-side for hours 0
through 12, and to the P-side for hours 12
through 24.
Using the Crown
●Fast Forward/Fast Reverse
Second click
First click
Normal timekeeping
Crown
Important!
●To prevent loss of water resistance
and/or damage due to impact, be sure
to push the crown in to its normal
position after you are finished using it.
●When pushing the crown back in, take
care not to apply too much force.
After pulling out the crown to the first or second
click, rotating it quickly in succession in either
direction will start a fast forward or fast reverse
operation. While a fast forward operation is in
progress, quickly rotating the crown in
succession again will increase the speed even
further.
●Stopping Fast Forward/Fast Reverse
Rotate the crown in the direction opposite that
of the ongoing operation or press any button.
Note
●If you do not perform any operation for
about two minutes after pulling out the
crown, crown operations will
automatically become disabled. If that
happens, push the crown back in and
then pull it out again.
Hand and Day Indicator
Movement
30
Day indicator
Mode hand
●Mode Hand and Day Indicator
Movement
Changing the day setting of the watch will also
cause the mode hand to move.
●Day
●It can take anywhere from about 10 to 40
seconds for the day indicator to change
after timekeeping reaches midnight. The
mode hand moves as the day indicator
changes.
●The day may not be indicated correctly
while the watch’s crown is pulled out.
Solar Charging
This watch runs on power supplied from a
rechargeable (secondary) battery that is
charged by a solar panel. The solar panel is
integrated into the face of the watch, and
power is generated whenever the face is
exposed to light.
●Charging the Watch
When you are not wearing the watch, put it in
a location where it is exposed to bright light.
While you are wearing the watch, make sure
that its face (solar panel) is not blocked from
light by the sleeve of your clothing. Power
generation efficiency is reduced even when
the face of the watch is blocked only partially.
NOYES
Important!
●Depending on light intensity and local
conditions, the watch may become hot
to the touch when exposed to light for
charging. Take care to avoid burn
injury after charging. Also, avoid
charging the watch under high-
temperature conditions like the ones
described below.
ー
On the dashboard of a vehicle
parked in the sun
ー
Near an incandescent light bulb or
other source of heat
ー
Under direct sunlight or in other hot
areas for long periods
Watch Operation Guide 5652
3

●Checking the Charge Level
Immediately after you press (C) to return to the
Timekeeping Mode, the mode hand will
indicate the battery charge level. After a short
while, the mode hand will indicate the current
day of the week.
30
①
②
③
A Good (high charge)
B Good (medium charge)
C Low Battery
●Remaining Charge and Dead Battery
You can determine if the charge level is low by
checking the hand movement. Functions
become disabled as battery power goes low.
Important!
●Should the battery go low or go dead,
expose the face (solar panel) to light as
soon as possible.
Note
●Exposing the watch face to light after
the battery goes dead will cause the
second hand to revolve
counterclockwise until it stops at
second 57. This indicates charging
has started.
Low Battery Power
The second hand jumps at two-second
intervals.
30
Second hand
Dead Battery
All hands and the day indicator are stopped.
1
●Charging Time Guidelines
The table below shows guidelines for
approximate charging times.
Charging Times Required for 1 Day of
Operation
Light Level (Lux) Approximate
Charging Time
50,000 8 minutes
10,000 30 minutes
5,000 48 minutes
500 8 hours
Times Required to Achieve Next Charge
Level
●Sunny day, outdoors (50,000 lux)
Dead battery n Medium
charge 2 hours
Medium charge n High
charge 18 hours
High charge n Full charge 5 hours
●Sunny day, near a window (10,000 lux)
Dead battery n Medium
charge 6 hours
Medium charge n High
charge 68 hours
High charge n Full charge 19 hours
●Overcast day, near a window (5,000 lux)
Dead battery n Medium
charge 9 hours
Medium charge n High
charge 110 hours
High charge n Full charge 30 hours
●Indoor fluorescent lighting (500 lux)
Dead battery n Medium
charge 97 hours
Medium charge n High
charge -
High charge n Full charge -
Note
●Actual charging time depends on the
local charging environment.
●Power Saving
Leaving the watch in a dark location for about
one hour between the hours of 10 p.m. and
5:50 a.m. will cause the second hand to stop,
and the watch to enter Level 1 power saving.
If the watch is left in this condition for six or
seven days, all hands will stop and the watch
will enter Level 2 power saving.
Level 1 :
Basic timekeeping functions are operational.
Level 2 :
Only the day indicator is operational.
Note
●Note that the watch also may enter the
power saving state if its face is blocked
from light by your sleeve while you are
wearing it.
●The watch will enter power saving from
the Timekeeping Mode only.
●Recovering from Power Saving
Operation
Press any button, perform a crown operation,
or place the watch in a well-lit area to recover
from power saving.
Watch Operation Guide 5652
4

Useful Features
Pairing the watch with your phone makes a
number of the watch’s features easier to use.
Auto time adjustment
lAuto Time Adjustment
12:30
Selection of More Than 300 World Time
cities
lConfiguring World Time Settings
In addition, a number of other watch settings
can be configured using your phone.
To transfer data to a watch and to
configure settings, you first need to pair
the watch with your phone.
lGetting Ready
●Your phone needs to have the CASIO
“OCEANUS Connected” app installed to
pair with the watch.
Time Adjustment
Your watch can obtain date and time
information by connecting with a phone and by
receiving time signals, which it uses to adjust
its settings.
Important!
●Disable auto time adjustment
whenever you are inside an aircraft or
in any other area where radio wave
reception is prohibited or restricted.
lUsing the Watch in a Medical
Facility or Aircraft
Referring to the information below, configure
the time setting in accordance with the method
that suits your own lifestyle.
Do you use a phone?
Time adjustment by connecting with your
phone is recommended.
lAuto Time Adjustment
12:30
Can you receive a time signal in your area?
If you are able to receive a time signal,
time settings can be adjusted in
accordance with a received signal.
lTime Calibration Signal Reception
Ranges
lSetting a Home City
Other than the above.
If you are unable to connect with a phone
and are unable to receive a time signal,
you can perform watch button operations
to adjust its time setting.
lUsing Watch Operations to Adjust the
Time Setting
Time Adjustment Using a
Time Signal
Overview
The watch’s time and day settings can be
configured in accordance with a received time
calibration signal.
Important!
●In order to make it possible for the
current time setting to be adjusted
correctly based on time calibration
signal reception, you need to specify
the time zone where you are using the
watch.
●If the watch was unable to connect with
a phone even once for time adjustment
during the previous day while
connection with a phone is being used,
it will automatically try to receive a time
calibration signal.
●Disable auto time adjustment
whenever you are inside an aircraft or
in any other area where radio wave
reception is prohibited or restricted.
lUsing OCEANUS Connected to
Configure Settings
lUsing Watch Operations to
Configure Settings
Note
●Areas where time calibration signal
reception is supported are limited.
When the watch is in an area where
time calibration signal reception is not
possible, connect with a phone to
adjust time and day settings.
lTime Calibration Signal Reception
Ranges
●If the watch does not indicate the
correct time even after it receives a
time calibration signal, correct the
hand and day indicator positions.
lUsing OCEANUS Connected to
Correct Hand Positions
lUsing Watch Operations to
Correct Hand Positions
Watch Operation Guide 5652
5

Appropriate Signal Reception
Location
A time calibration signal can be received while
the watch is near a window.
●Position the watch so its 6 o’clock side is
facing the window.
●Keep metal objects away from the watch.
●Do not move the watch.
●Do not perform any operation on the watch.
6 o’clock position
Note
●You may experience time calibration
signal reception problems in the areas
described below.
ー
Among or near buildings
ー
While riding in a vehicle
ー
Near household appliances, office
machines, mobile phones, etc.
ー
On a construction site, in an airport,
or any other location where radio
wave interference occurs
ー
Near high-voltage lines
ー
In mountainous areas or behind a
mountain
Time Calibration Signal Reception
Ranges
●Japan (JJY)
The Japan time signal radio stations are
located on Mt. Otakadoya in Fukushima and
Mt. Hagane in Fukuoka/Saga.
The reception range of the Japanese time
signals is approximately 1,000 km from each
transmission station.
●China (BPC)
The China time signal radio station is located
in Shangqiu, Henan Province, China.
The reception range of the Chinese time
signal is approximately 1,500 km from the
transmission station.
●United States (WWVB)
The United States time signal radio station is
located in Fort Collins, Colorado.
The reception range of the U.S. time signal is
approximately 3,000 km from the transmission
station.
●U.K. (MSF)/Germany (DCF77)
The U.K. time signal radio station is located in
Anthorn, Cumbria.
The German time signal radio station is
located in Mainflingen, southeast of Frankfurt.
The reception range of the U.K. and German
time signals is approximately 1,500 km from
each transmission station.
Note
●Even if you are within the normal
reception range of a time calibration
signal, reception may be made
impossible by the following factors:
geographic contours, weather, the
season, the time of day, wireless
noise.
Auto Time Calibration Signal
Receive
An automatic time calibration signal receive
operation is performed and the time and day
settings are adjusted between midnight and
5:00 a.m. Once a signal receive operation is
successful, no more auto receive operations
are performed that day.
Important!
●Time calibration signal auto receive is
disabled while the watch is paired with
a phone for auto time adjustment.
However, time signal auto receive will
be performed if there has been no auto
time adjustment based on connection
between the watch and phone for more
than one day.
1. Place the watch near a window or some
other location appropriate for signal
reception.
●The second hand points to [RC] while
the receive operation in progress.
●When the receive operation is
successful, the time and day settings
will be adjusted automatically.
Note
●Reception takes anywhere from about
two minutes to about 10 minutes. It can
take as long as 20 minutes.
Manual Time Signal Receive
1. Place the watch near a window or some
other location appropriate for time signal
reception.
2. Enter the Timekeeping Mode.
lNavigating Between Modes
3. Hold down (B) for at least 1.5 seconds until
the second hand points to [RC].
This indicates that the receive operation
has started. After the receive operation is
complete, the watch’s time and day
settings will be adjusted accordingly.
Watch Operation Guide 5652
6

Note
●The receive operation takes anywhere
from about two minutes to about 10
minutes. It can take as long as 20
minutes.
●Time calibration signal reception is
better at night than during the day.
●A time calibration signal cannot be
received while the city selected as your
Home City is one that does not support
signal reception.
Signal Reception Precautions
●When the watch is unable to adjust its time
in accordance with a calibration signal for
some reason, average timekeeping
accuracy is within ±15 seconds per month.
●Note that an internal decoding process the
watch performs after it receives a signal
may cause the time setting to be slightly off
(by less than one second).
●Time calibration signal reception is not
possible under the conditions described
below.
ー
While battery power is low
ー
While in the Stopwatch Mode
ー
At Power Saving Level 2
ー
While the crown is pulled out
ー
While the Home City setting is a time zone
where time signal reception is not
possible
ー
While the watch is outside the time signal
reception range
●When the receive operation is successful,
the time and/or day settings will be adjusted
automatically. Summer time will not be
applied correctly in the case described
below.
ー
When the summer time start date and
time, end date and time, or other rules are
changed by authorities
●If your watch is connected with a phone,
settings must be configured so OCEANUS
Connected can acquire location
information. Even if you are in an area that
is within the reception range of a time signal,
reception will not be performed if settings
are configured in a way that makes signal
reception impossible.
●As of January 2020, China does not
observe summer time. If China starts to
observe summer time in the future, the time
displayed by the watch for China may not be
correct.
Using Watch Operations to
Adjust the Time Setting
If your watch cannot connect with a phone for
some reason, you can use watch operations
to adjust date and time settings.
●Setting a Home City
Use the procedure in this section to select a
city (time zone) to use as your Home City.
Important!
●If you do not specify the city (time zone)
where you are using the watch, the
current time setting will not be correct
after it is adjusted based on a time
calibration signal.
1. Pull out the crown to the second click.
The second hand will move to the city
code of the currently selected Home City.
30
Crown
Home City
2. Rotate the crown to change the Home
City.
●If the name of the city you want to
specify is not shown, you can specify a
time differential (time zone).
●For information about time differential
(time zones) you can specify, refer to
the information at the link below.
lCity (Time Zone) List
3. Push the crown back in to its normal
position.
●Adjusting the Time and Day Setting
1. Pull out the crown to the second click.
The second hand will move to the city
code of the currently selected Home City.
●The mode hand will point to the summer
time setting for the currently selected
Home City.
30
Crown
Home City
Summer time setting
2. Hold down (C) for at least one second.
This causes the second hand to move to
12 o’clock, and enables the minute setting
operation.
3. Rotate the crown to change the minute
setting.
4. Press (C).
The hour hand will move slightly,
indicating that the hour setting operation
is enabled.
5. Rotate the crown to change the hour
setting.
6. Press (C).
This enables the year ten’s digit setting
operation.
7. Rotate the crown to move the second
hand to the desired setting for the year
ten’s digit.
80 40
90 30
20
50
70
10
60
00
Year (10’s digit)
8. Press (C).
This enables the year one’s digit setting
operation.
9. Rotate the crown to move the second
hand to the desired setting for the year
one’s digit.
84
93
2
5
7
1
6
0
Year (one’s digit)
10. Press (C).
This enables the month setting operation.
10
11 12
84
93
2
5
7
1
6
Month
Watch Operation Guide 5652
7

11. Rotate the crown to change the month.
12. Press (C).
The mode hand will move slightly,
indicating that the day setting operation is
enabled.
●Changing the day setting will cause the
mode hand to rotate repeatedly.
lHand and Day Indicator Movement
13. Rotate the crown to change the day.
30
Day
14. On a time signal at the top of a minute,
push the crown back in.
●Configuring the Summer Time Setting
(Home City)
If you are in an area that observes summer
time, you can also configure a summer time
setting.
Note
●The initial factory default summer time
setting for all cities is [AT (AUTO)]. In
many cases, the [AT (AUTO)] setting
lets you use the watch without
switching between summer time and
standard time.
●When performing a manual operation
to select a time zone for which there is
no city name displayed, use [STD] or
[DST] for the summer time setting.
1. Pull out the crown to the second click.
The second hand will point to the currently
selected time zone.
●The mode hand will point to the summer
time setting for the currently selected
Home City.
2. Hold down (A) for at least one second.
Each time you hold down (A) for at least
one second, the summer time setting will
cycle to the next available option.
30
Summer time setting
●[AT (AUTO)]
The watch switches between standard
time and summer time automatically.
●[STD]
The watch always indicates standard
time.
●[DST]
The watch always indicates summer
time.
3. Push the crown back in to its normal
position.
Checking the Last Time
Adjustment Result
1. Enter the Timekeeping Mode.
lNavigating Between Modes
2. Press (B).
The second hand will indicate the last time
adjustment operation result. The watch
hands will return to indicating the current
time if you do not perform any operation
for nine or ten seconds.
[Y(YES)]: Last time adjustment operation
successful.
[N(NO)]: Last time adjustment operation
failed.
30
Second hand
Note
●Even if there was a successful time
calibration signal receive operation or
connection with a phone, the second
hand will point to [N(NO)] if you
adjusted the time and/or date setting
manually.
Using the Watch in a Medical
Facility or Aircraft
Whenever you are in a hospital, on an aircraft,
or in any other location where auto time
calibration signal receive or connection with a
phone may cause problems, you can perform
the procedure below to disable such
operations. To re-enable auto time
adjustment, perform the same operation
again.
1. Enter the Timekeeping Mode.
lNavigating Between Modes
2. Press (B).
The second hand will indicate the last
receive result for nine or ten seconds.
30
Second hand
3. Within 10 seconds after pressing (B)
above, pull out the crown to the first click.
●If more than 10 seconds elapse before
you pull out the crown after you perform
the operation in step 2, the second hand
will return to indicating seconds. If this
happens, perform step 2 again.
4. Rotate the crown to disable auto time
adjustment.
[Y(YES)]: Auto time adjustment enabled.
[N(NO)]: Auto time adjustment disabled.
30
Crown
5. Push the crown back in.
Note
●If the watch is paired with a phone,
OCEANUS Connected can be used to
disable auto time adjustment.
lUsing OCEANUS Connected to
Disable Auto Time Adjustment
Watch Operation Guide 5652
8

Using Mobile Link
with a Mobile Phone
While there is a Bluetooth connection
between the watch and phone, the watch time
setting is adjusted automatically. You can also
change the watch’s other settings.
Note
●This function is available only while
OCEANUS Connected is running on
the phone.
●This section describes watch and
phone operations.
X : Watch operation
Y : Phone operation
Getting Ready
To use your watch in combination with a
phone, you first need to pair them. Perform the
steps below to pair the watch with a phone.
●A Install the required app on your
phone.
In Google Play or the App Store, search for the
CASIO “OCEANUS Connected” app and
install it on your phone.
●B Configure Bluetooth settings.
Enable the phone’s Bluetooth.
Note
●For details about setting procedures,
see your phone documentation.
●C Pair the watch with a phone.
Before you can use the watch in combination
with a phone, you first need to pair them.
1. Move the phone to be paired with close to
(within one meter of) the watch.
2. Y Tap the “OCEANUS Connected” icon.
●If your phone is already paired with a
watch, tap , tap the item for
connecting with a new watch, and then
tap this watch’s name.
3. Y Perform the operation shown on the
screen of the phone to be paired with.
●If a pairing prompt message appears,
perform the operation shown on the
phone screen.
●If pairing fails for some reason, the
watch will return to the state in step 1 of
this procedure. Perform the pairing
procedure again from the beginning.
Note
●The first time you start up OCEANUS
Connected, a message will appear on
your phone asking if you want to
enable location information
acquisition. Configure settings to allow
background use of location
information.
Auto Time Adjustment
The watch will connect with a phone at preset
times each day and adjust its time settings.
●Using This Function
Your watch adjusts its time setting four times
a day according to a preset schedule. If you
leave your watch in the Timekeeping Mode, it
will perform the adjustment operation
automatically as you go about your daily life,
without any operation required by you.
12:30
Important!
●The watch may not be able to perform
auto time adjustment under the
conditions described below.
ー
While the watch is too far away from
its paired phone
ー
While communication is not possible
due to radio interference, etc.
ー
While the phone is updating its
system
ー
While OCEANUS Connected is not
running on the phone
Note
●If the watch does not indicate the
correct time even if it is able to connect
with a phone, adjust the hand and day
indicator positions.
lAdjusting Hand and Day Indicator
Alignment
●If there is a World Time City specified
with OCEANUS Connected, its time
will also be adjusted automatically.
●The watch will connect with the phone
and perform auto time adjustment at
around 12:30 a.m., 6:30 a.m., 12:30
p.m. and 6:30 p.m. The connection is
automatically terminated after auto
time adjustment is complete.
●Triggering Immediate Time Adjustment
The watch’s time setting will be adjusted
automatically whenever you establish a
connection between the watch and a phone.
Whenever you want to trigger immediate time
adjustment, perform the procedure below to
connect with a phone.
1. Move the phone close to (within one meter
of) the watch.
2. X Hold down (B) for at least 0.5 seconds
until the second hand points to [C].
Release the button as soon as the second
hand points to [C].
When the watch connects with a phone,
the second hand will normally move to
[Y(YES)] and then the watch’s time setting
will be adjusted.
●The connection is terminated
automatically after time adjustment is
complete.
30
Watch Operation Guide 5652
9

Configuring World Time
Settings
Specifying a World Time City with OCEANUS
Connected causes the watch’s World Time
City to change accordingly. The standard
time/summer time setting of the World Time
will be adjusted automatically without any
watch operation required by you.
30
Note
●OCEANUS Connected World Time lets
you select from among approximately
300 cities as the World Time City.
●Selecting a World Time City
1. Y Tap the “OCEANUS Connected” icon.
2. X Hold down (C) for at least 3.5 seconds.
This causes the second hand to move to
[C] and establishes a connection between
the watch and phone.
3. Y Perform the operation shown on the
phone screen. The World Time setting will
be reflected on the watch.
●You can determine whether a World
Time is a.m. or p.m. by checking the
position of the small 24-hour hand.
30
World Time hour (24-hour)
World Time hour and minute
●Configuring the Summer Time Setting
1. Y Tap the “OCEANUS Connected” icon.
2. X Hold down (C) for at least 3.5 seconds.
This causes the second hand to move to
[C] and establishes a connection between
the watch and phone.
3. Y Perform the operation shown on the
phone screen to select a summer time
setting.
●“Auto”
The watch switches between standard
time and summer time automatically.
●“OFF”
The watch always indicates standard
time.
●“ON”
The watch always indicates summer
time.
Note
●While the summer time setting is
“Auto”, the watch will switch between
standard time and summer time
automatically. You do not need to
switch between standard time and
summer time manually. Even if you are
in an area that does not observe
summer time, you can leave the
watch’s summer time setting as “Auto”.
●Changing the time setting manually
with a watch operation will cancel auto
standard time/summer time switching.
●OCEANUS Connected screen shows
information about summer time
periods.
●Swapping Your World Time and Home
Time
1. Y Tap the “OCEANUS Connected” icon.
2. X Hold down (C) for at least 3.5 seconds.
This causes the second hand to move to
[C] and establishes a connection between
the watch and phone.
3. Y Perform the operation shown on the
phone screen to swap your Home Time
with your World Time.
For example, if your Home City is Tokyo
and the World Time City is New York, they
will be swapped as shown below.
30 30
After swappingBefore swapping
World Time City
(New York)
World Time City
(Tokyo)
Home City
(New York)
Home City
(Tokyo)
Note
●Auto time adjustment does not work for
24 hours after swapping of the Home
Time and World Time.
Adjusting Hand and Day
Indicator Alignment
If the hands and/or day indicator are out of
alignment even though auto time adjustment
is being performed, use OCEANUS
Connected to adjust them.
1. Y Tap the “OCEANUS Connected” icon.
2. X Hold down (C) for at least 3.5 seconds.
This causes the second hand to move to
[C] and establishes a connection between
the watch and phone.
3. Y Perform the operation shown on the
phone screen to correct hand and day
indicator alignment.
Note
●The movement of some hands are
linked with other hands. When
correcting the alignment of such a
hand, you will have to correct the
alignment of the linked hand(s) at the
same time.
Watch Operation Guide 5652
10

Phone Finder
You can use phone finder to trigger a tone on
the phone to make it easy to find. The tone is
forced to sound even if the phone is in vibrate
mode.
Important!
●Phone finder will not sound the tone
unless OCEANUS Connected is
running on the phone.
●Do not use this function in areas where
phone call tones are restricted.
●The tone sounds at a high volume. Do
not use this function when listening to
phone output over earphones.
1. X If the watch is connected with a phone,
press any button to terminate the
connection.
30 30
DisconnectedConnected
2. X Hold down (C) for at least one second.
This will cause the watch to enter the
Timekeeping Mode.
3. X Hold down (B) for at least 4.5 seconds
until the second hand points to [C].
A connection will be established between
the watch and phone, and then the
phone’s ringtone will sound.
●It will take a few seconds before the
phone tone sounds.
4. X Press any button to stop the tone.
●You can press any watch button to stop
the phone tone, but only during the first
30 seconds after it starts to sound.
Configuring Watch Settings
You can use OCEANUS Connected to specify
the amount of time until the Bluetooth
connection is automatically terminated, and to
configure other settings.
1. Y Tap the “OCEANUS Connected” icon.
2. X Hold down (C) for at least 3.5 seconds.
This causes the second hand to move to
[C] and establishes a connection between
the watch and phone.
3. Y Select the setting you want to change
and then perform the operation shown on
the phone screen.
Changing the Home City
Summer Time Setting
1. Y Tap the “OCEANUS Connected” icon.
2. X Hold down (C) for at least 3.5 seconds.
This causes the second hand to move to
[C] and establishes a connection between
the watch and phone.
3. Y Perform the operation shown on the
phone screen to change your Home City
summer time setting.
Checking the Watch Charge
Level
Use the procedure below to check the current
charge level with OCEANUS Connected.
1. Y Tap the “OCEANUS Connected” icon.
2. X Hold down (C) for at least 3.5 seconds.
This causes the second hand to move to
[C] and establishes a connection between
the watch and phone.
3. Y Use OCEANUS Connected to check the
charge level.
Connection
Connecting with a Phone
This section explains how to establish a
Bluetooth connection with a phone that is
paired with the watch.
●If the watch is not paired with the phone you
want to connect with, refer to the information
below and pair them.
lC Pair the watch with a phone.
1. Move the phone close to (within one meter
of) the watch.
2. X While the second hand is not pointing to
[C], hold down (C) for least 3.5 seconds.
This causes the second hand to move to
[C] and establishes a connection between
the watch and phone.
Important!
●If you have problems establishing a
connection, it could mean that
OCEANUS Connected is not running
on your phone. On your phone’s home
screen, tap the “OCEANUS
Connected” icon. After the app starts
up, hold down the watch’s (C) button
for at least 3.5 seconds.
Note
●The connection will be terminated if
you do not perform any operation on
the watch or phone for a fixed amount
of time.
To specify the connection limit time,
perform the following operation with
OCEANUS Connected: “Watch
settings” n “Connection time”. Next,
select a setting of 3 minutes, 5 minutes,
or 10 minutes.
Watch Operation Guide 5652
11

Canceling a Connection with a
Phone
Pressing any button terminates the Bluetooth
connection and returns the second hand to its
normal operation.
30 30
DisconnectedConnected
Using the Watch in a Medical Facility
or Aircraft
Whenever you are in a hospital, on an aircraft,
or in any other location where auto time
calibration signal receive or connection with a
phone may cause problems, you can perform
the procedure below to disable such
operations. To re-enable auto time
adjustment, perform the same operation
again.
1. Y Tap the “OCEANUS Connected” icon.
2. X Hold down (C) for at least 3.5 seconds.
This causes the second hand to move to
[C] and establishes a connection between
the watch and phone.
3. Y Perform the operation shown on the
phone screen to enable or disable auto
time adjustment.
Unpairing
Unpairing the watch from a phone requires
both OCEANUS Connected and watch
operations.
Note
●If you are using an iPhone, also delete
the pairing information stored on the
phone.
●Deleting Pairing Information from
OCEANUS Connected
1. X If the watch is connected with a phone,
press any button to terminate the
connection.
30 30
DisconnectedConnected
2. Y Tap the “OCEANUS Connected” icon.
3. Y Perform the operation shown on the
phone screen to unpair.
●Deleting Pairing Information from the
Watch
1. X Enter the Timekeeping Mode.
lNavigating Between Modes
2. X Pull out the crown to the second click.
3. X Hold down (B) for at least 10 seconds.
This deletes the pairing information. The
second hand will point to [C].
4. X Push the crown back in.
●iPhone Only
Deleting the phone’s pairing
information
For details about setting procedures, see your
phone documentation.
“Settings” n “Bluetooth” n Cancel the
watch’s device registration.
If you purchase another phone
You need to perform the pairing operation
whenever you want to establish a Bluetooth
connection with a phone for the first time.
lDeleting Pairing Information from the
Watch
lC Pair the watch with a phone.
World Time
World Time lets you look up the current time
in any one of 27 cities and 38 time zones
around the globe.
30
World Time City Setting
Use the procedure below to specify the city
(time zone) whose time you want to view.
1. Enter the Timekeeping Mode.
lNavigating Between Modes
2. Pull out the crown to the first click.
The second hand indicates the currently
selected World Time City, while the mode
hand indicates the World Time City’s
summer time setting.
30
Crown
World Time City (time zone)
Summer time setting
3. Rotate the crown to change the World
Time City (time zone).
The small hour and minute hands will
indicate the current time in the World Time
city you selected.
●If the name of the city you want to
specify is not shown, you can specify a
time differential (time zone).
●For information about time differential
(time zones) you can specify, refer to
the information at the link below.
lCity (Time Zone) List
30
World Time hour and minute
Crown
World Time hour (24-hour)
4. Push the crown back in.
Watch Operation Guide 5652
12

Configuring the Summer
Time Setting (World Time)
If you are in an area that observes summer
time, you can also configure a summer time
setting.
Note
●The initial factory default summer time
setting for all cities is [AT (AUTO)]. In
many cases, the [AT (AUTO)] setting
lets you use the watch without
switching between summer time and
standard time.
●When performing a manual operation
to select a time zone for which there is
no city name displayed, use [STD] or
[DST] for the summer time setting.
●While [UTC] is selected as the city, you
will not be able to change or check the
summer time setting.
1. Enter the Timekeeping Mode.
lNavigating Between Modes
2. Pull out the crown to the first click.
The second hand will point to the currently
selected World Time City (time zone).
●The mode hand will move to the
summer time setting of the currently
selected World Time City (time zone).
3. Hold down (A) for at least one second.
Each time you hold down (A) for at least
one second, the summer time setting will
cycle to the next available option.
●[AT (AUTO)]
The watch switches between standard
time and summer time automatically.
●[STD]
The watch always indicates standard
time.
●[DST]
The watch always indicates summer
time.
30
4. Push the crown back in to its normal
position.
Swapping Your Home City
Time and World Time
In the Timekeeping Mode, you can swap your
Home City time with your World Time by
holding down (A) for at least three seconds.
30 30
After swappingBefore swapping
World Time
World Time
Home Time
Home Time
●If a swapping operation causes a change in
the day indicator setting, the mode hand will
rotate repeatedly.
lHand and Day Indicator Movement
Note
●This function comes in handy when
you need to move to another time
zone. For details about how to use it,
go to the section below.
lMoving to Another Time Zone
Stopwatch
The stopwatch measures elapsed time in units
of one second up to 23 hours, 59 minutes, 59
seconds (24 hours).
30
Measuring Elapsed Time
30
Minutes
Hours (24-hour time)
Seconds
Hours
1. Enter the Stopwatch Mode.
lNavigating Between Modes
2. Use the operations below to measure
elapsed time.
Stop
Resume
Stop
Start
3. Press (B) to reset the elapsed time to all
zeros.
4. Press (C) to return to the Timekeeping
Mode.
Adjusting Hand and
Day Indicator
Alignment
Strong magnetism or impact can cause the
hands and/or the day indicator to go out of
alignment. If this happens, adjust hand and
day indicator alignment.
●The watch performs alignment of the hour
hand, minute hand, second hand, and 24-
hour hand automatically.
Watch Operation Guide 5652
13

Adjusting Hand and Day
Indicator Alignment
1. Pull out the crown to the second click.
2. Hold down (B) for at least five seconds
until the second hand points to 12 o’clock .
Release the button when the second hand
reaches 12 o’clock.
This will start auto alignment of the hour
hand, minute hand, second hand, and 24-
hour hand.
●After auto alignment is complete, the
hands should be in the positions shown
below.
30
Second hand
Minute hand Hour hand
24-hour hand
Crown
3. Press (C).
Confirm that the small hour and minute
hands, and the small 24-hour hand are all
stopped at 12 o’clock.
30
Small minute hand
Small hour hand Small 24-hour hand
4. If the small hour and minute hands, and
the small 24-hour hand are not at 12
o’clock, rotate the crown to align them with
12 o’clock.
5. Press (C).
Confirm that the mode hand is stopped at
12 o’clock, and check if the day is
indicated properly.
30
30
Mode hand
Day (Operation start day)
6. If the mode hand and/or the day indicator
is out of alignment, rotate the crown to
move the mode hand to 12 o’clock and the
day to the center of the indicator window.
●The movement range of the mode hand
and day indicator is limited when you
rotate the crown. The maximum left-
right movement of the mode hand is 180
degrees in either direction. The day
indicator moves only slightly.
●After the mode hand and day indicator
are in the positions you want, advance
to step 9 of this procedure. If you are
unable to make the adjustments you
want, go to step 7.
7. Press (C).
Confirm that the day indicator shows “1”.
1
1
Day
●Changing the date setting will cause the
mode hand to rotate repeatedly. In
some cases, the mode hand may
continue to rotate for about 5 minutes.
lHand and Day Indicator Movement
8. If “1” is not shown for the day, rotate the
crown until “1” is shown for the day.
●The mode hand moves in conjunction
with crown rotation. Move the mode
hand to 12 o’clock.
9. Push the crown back in.
Note
●Leaving the crown pulled out for more
than approximately 30 minutes without
performing any operation will
automatically cause the adjustment
operation to become disabled. If this
happens, push the crown back in to its
normal position and then pull it out
again to restart the procedure from the
beginning. Pushing the crown in to its
normal position part way through the
alignment procedure will cause the
hands to return to their normal position.
Any alignment you performed up to
that point will be applied.
Moving to Another
Time Zone
Use the procedure below to easily change day
and time settings of the watch to a destination
location.
●Before Boarding
1. Configure the World Time to the current
time at your destination.
30
Destination time
Current time
lUsing OCEANUS Connected to
Configure Settings
lUsing Watch Operations to Configure
Settings
2. Disable auto time adjustment.
30
lUsing OCEANUS Connected to
Configure Settings
lUsing Watch Operations to Configure
Settings
●After Arriving
1. Swap the origin time zone time with the
destination time zone time.
30 30
After swappingBefore swapping
Destination time
Destination time
lUsing OCEANUS Connected to
Configure Settings
lUsing Watch Operations to Configure
Settings
2. Enable auto time adjustment.
lUsing OCEANUS Connected to
Configure Settings
lUsing Watch Operations to Configure
Settings
3. Adjust the time setting.
lTriggering Immediate Time Adjustment
Watch Operation Guide 5652
14

Other Information
This section provides non-operational
information you also need to know. Refer to
this information as required.
City (Time Zone) List
You can specify a time zone whose city code
is not shown on the face by aligning the
second hand with the applicable UTC offset.
City
code City name
Second
Hand
Position
Offset
UTC Coordinated
Universal Time 0 0
LON* London 2 0
PAR* Paris 4 +1
ATH* Athens 6 +2
JED Jeddah 8 +3
- - 9 +3.5
DXB Dubai 10 +4
- - 11 +4.5
- - 12 +5
DEL Delhi 13 +5.5
- - 14 +5.75
DAC Dhaka 15 +6
- - 16 +6.5
BKK Bangkok 17 +7
HKG* Hong Kong 19 +8
- - 21 +8.75
TYO* Tokyo 22 +9
- - 23 +9.5
SYD Sydney 24 +10
- - 25 +10.5
NOU Noumea 26 +11
WLG Wellington 28 +12
- - 29 +12.75
TBU Nuku’alofa 30 +13
CXI Kiritimati 32 +14
BAR Baker Island 36 -12
PPG Pago Pago 38 -11
HNL Honolulu 40 -10
- - 41 -9.5
ANC Anchorage 42 -9
LAX* Los Angeles 44 -8
DEN* Denver 46 -7
CHI* Chicago 48 -6
NYC* New York 50 -5
YHZ* Halifax 52 -4
- - 53 -3.5
RIO Rio de Janeiro 54 -3
FEN Fernando de
Noronha 56 -2
RAI Praia 58 -1
* Time zones where time calibration signal
reception is possible.
●The information in the above table is current
as of January 2020.
Summer Time Table
When [AT (AUTO)] is selected for a city that
observes summer time, switching between
standard time and summer time will be
performed automatically at the timing shown
in the table below.
Note
●Summer time start and end dates for
your current location may be different
from those shown below. If this
happens, you can have new summer
time information for your Home City
and World Time city sent to the watch
by connecting the watch with a phone.
If the watch is not connected with a
phone, you can change the summer
time setting manually.
City name Summer Time
Start
Summer Time
End
London
01:00, last
Sunday in
March
02:00, last
Sunday in
October
Paris
02:00, last
Sunday in
March
03:00, last
Sunday in
October
Athens
03:00, last
Sunday in
March
04:00, last
Sunday in
October
Sydney
02:00, first
Sunday in
October
03:00, first
Sunday in April
Wellington
02:00, last
Sunday in
September
03:00, first
Sunday in April
Anchorage
02:00, second
Sunday in
March
02:00, first
Sunday in
November
Los
Angeles
02:00, second
Sunday in
March
02:00, first
Sunday in
November
Denver
02:00, second
Sunday in
March
02:00, first
Sunday in
November
Chicago
02:00, second
Sunday in
March
02:00, first
Sunday in
November
New York
02:00, second
Sunday in
March
02:00, first
Sunday in
November
Halifax
02:00, second
Sunday in
March
02:00, first
Sunday in
November
Rio de
Janeiro*
00:00, third
Sunday in
October
00:00, third
Sunday in
February or
00:00, fourth
Sunday in
February
* As of January 2020, summer time has been
halted in Brazil (Rio de Janeiro). However, the
Auto DST operation of this watch does not
reflect this change.
Supported Phones
For information about phones that can
connect with the watch, visit the CASIO
website.
https://world.casio.com/os_mobile/wat/
Specifications
Accuracy at normal temperature :
±15 seconds per month average when time
adjustment by time calibration signal
reception or by communication with a phone
is not possible.
Timekeeping :
Hour, minute, second, day, day of the week,
Full Auto Calendar (2000 to 2099)
Signal Receive Functions :
Auto receive, manual receive
Auto transmitter selection (for JJY, MSF/
DCF77)
Receivable Call Signs
JJY (40kHz/60kHz), BPC (68.5kHz),
WWVB (60kHz), MSF (60kHz), DCF77
(77.5kHz)
Last reception result display
Automatic and manual switching between
standard time and summer time
World Time :
Hour, minute, 24-hour
27 world cities (38 time zones)
Auto summer time setting
Home Time swapping
Watch Operation Guide 5652
15

Stopwatch :
Measuring unit: 1 second
Measuring capacity: 23:59’59” (24 hours)
Measuring functions: Elapsed time
Mobile Link :
Auto Time Correction
Time setting adjusted automatically at
preset time.
One-touch Time Correction
Manual connection and time adjustment
Phone finder
Watch operation sounds the alert sound
of the phone.
World Time
Current time for a selection of
approximately 300 cities
Home Time/World Time swapping
Auto summer time setting
Automatic switching between standard
time and summer time.
Hand alignment correction
Data Communication Specifications
Bluetooth®
Frequency Band: 2400MHz to 2480MHz
Maximum Transmission: 0 dBm (1 mW)
Communication range: Up to 2 meters
(depends on environment)
Other :
Auto Correction of Hand Home Positions,
Power Saving, Battery indicator
Power Supply :
Solar panel and one rechargeable battery
Approximate Battery Life :
Approximately 5 months
Conditions
Not exposed to light under the conditions
below.
Auto Time Adjustment: 4 times/day
Power Saving: 6 hours/day
Specifications are subject to change without
notice.
Mobile Link Precautions
●Legal Precautions
●This watch complies with or has received
approval under the radio laws of various
countries and geographical areas. Using
this watch in an area where it does not
comply with or has not received approval
under applicable radio laws may be a
criminal offense. For details, visit the CASIO
Website.
https://world.casio.com/ce/BLE/
●Use of this watch inside of aircraft is
restricted under the aviation laws of each
country. Be sure to follow the instructions of
airline personnel.
●Precautions when using Mobile Link
●When using this watch in combination with
a phone, keep the watch and phone close
to each other. A range of two meters is
recommended as a guideline, but the local
environment (walls, furniture, etc.), the
structure of a building, and other factors
may require a much closer range.
●This watch can be affected by other devices
(electrical devices, audio-visual equipment,
office equipment, etc.) In particular, it can
be affected by operation of a microwave
oven. The watch may not be able to
communicate normally with a phone if a
microwave oven is operating nearby.
Conversely, this watch may cause noise in
radio reception and the video image of a TV.
●Bluetooth of this watch uses the same
frequency band (2.4 GHz) as wireless LAN
devices, and use of such devices in close
proximity of this watch may result in radio
interference, slower communication
speeds and noise for the watch and the
wireless LAN device, or even
communication failure.
●Stopping Radio Wave Emission by This
Watch
The watch is emitting radio waves whenever
the second hand is pointing to [C].
Even if the second hand is not pointing at [C],
the watch will automatically attempt to
connect with a phone four times a day to adjust
its time settings.
When in a hospital, on an aircraft, or in any
other area where the use of radio waves is not
allowed, use the operation below to stop radio
wave generation.
●Stopping Radio Wave Generation
Press any button to terminate the Bluetooth
connection.
30 30
DisconnectedConnected
●Disabling Auto Time Adjustment
Configure OCEANUS Connected settings
to disable time adjustment between the
watch and phone.
lUsing OCEANUS Connected to Disable
Auto Time Adjustment
Copyrights and Registered
Copyrights
●The Bluetooth® word mark and logos are
registered trademarks owned by the
Bluetooth SIG, Inc. and any use of such
marks by CASIO Computer Co., Ltd. is
under license.
●iPhone and App Store are trademarks of
Apple Inc. in the United States and other
countries.
●iOS is a trademark or registered trademark
of Cisco Systems, Inc.
●GALAXY is a registered trademark of
Samsung Electronics Co., Ltd.
●Android and Google PlayTM are trademarks
or registered trademarks of Google LLC.
●Other company names and product names
used herein are trademarks or registered
trademarks of their respective companies.
Watch Operation Guide 5652
16

Troubleshooting
Signal Reception (Time
Calibration Signal)
Q1 The watch cannot perform a receive
operation.
Is the watch’s battery charged?
Signal reception is not possible while
battery power is low. Keep the watch
exposed to light until it recharges
sufficiently.
lSolar Charging
Is the watch in the Timekeeping Mode?
Time signal receive is performed only
while the watch is in the Timekeeping
Mode. Return to the Timekeeping Mode.
lNavigating Between Modes
Is auto time adjustment enabled?
Time signals cannot be received while
auto time adjustment is disabled. Enable
auto time adjustment to perform receive
operations.
lUsing OCEANUS Connected to
Configure Settings
lUsing Watch Operations to Configure
Settings
Is your Home City setting correct for your
location?
The watch will not indicate the correct time
if the Home City setting is wrong. Change
your Home City setting so it correctly
reflects your location.
lSetting a Home City
After checking the above, the watch still
cannot perform a receive operation.
Time calibration signal reception is not
possible under the conditions described
below.
●When watch is at Level 2 power saving
●When the crown is pulled out
If successful reception is not possible for
some reason, you can adjust the time and
day settings manually.
Q2 The signal receive operation always
fails.
Is the watch in a location that is appropriate
for signal reception?
Check your surroundings and move the
watch to a location where signal reception
is better.
lAppropriate Signal Reception Location
Did you avoid touching the watch while the
receive operation was in progress?
Minimize movement of the watch and do
not perform any watch operation while a
receive operation is in progress.
Is the signal transmitter in your area
transmitting a signal?
The transmitter of the time calibration may
not be transmitting a signal.
Try again later.
Q3 Signal reception should have been
successful, but the watch’s time and/
or day is wrong.
Is the indicated time off by one hour or by
30 minutes?
The watch may be using the wrong time
offset. Correctly specify the time zone
where you are using the watch.
lSetting a Home City
Is the indicated hour and/or minute wrong?
The hour hand and/or minute hand may
be out of alignment. Perform the
procedure under “Adjusting Hand and
Day Indicator Alignment” to auto adjust
hour and minute hand alignment.
lAdjusting Hand and Day Indicator
Alignment
Is the indicated day of the week wrong?
The day of the week hand (mode hand)
may be out of alignment. Perform the
procedure under “Adjusting Hand and
Day Indicator Alignment” to adjust mode
hand alignment.
lAdjusting Hand and Day Indicator
Alignment
Is the World Time incorrect?
The World Time hands (small hour hand,
small minute hand) may be out of
alignment. Perform the procedure under
“Adjusting Hand and Day Indicator
Alignment” to adjust small hour hand and
small minute hand alignment.
lAdjusting Hand and Day Indicator
Alignment
After checking the above, the time and/or
day settings is still wrong.
Adjust time and day settings manually.
lUsing Watch Operations to Adjust the
Time Setting
I can’t pair the watch with a
phone.
Q1 I’ve never been able to establish a
(pairing) connection between the
watch and phone.
Are you using a supported phone model?
Check if the phone model and its
operating system are supported by the
watch.
For information about supported phone
models, visit the CASIO Website.
https://world.casio.com/os_mobile/wat/
Did you install OCEANUS Connected on
your phone?
OCEANUS Connected needs to be
installed on your phone in order to
connect with the watch.
lA Install the required app on your
phone.
Are your phone’s Bluetooth settings
configured correctly?
Configure the phone’s Bluetooth settings.
For details about setting procedures, see
your phone documentation.
iPhone Users
●“Settings” n “Bluetooth” n On
●“Settings” n “Privacy” n “Bluetooth
Sharing” n “OCEANUS Connected” n
On
Android Users
●Enable Bluetooth.
Other than the above.
Some phones need to have BT Smart
disabled to use OCEANUS Connected.
For details about setting procedures, see
your phone documentation.
On the Home Screen, tap: “Menu” n
“Settings” n “Bluetooth” n “Menu” n
“BT Smart settings” n “Disable”.
Watch Operation Guide 5652
17

I can’t reconnect the watch
and phone.
Q1 The watch will not re-connect with the
phone after they are disconnected.
Is OCEANUS Connected running?
The watch cannot re-connect with your
phone unless OCEANUS Connected is
running on the phone. On your phone’s
Home Screen, tap the “OCEANUS
Connected” icon. Next, on the watch, hold
down (C) for at least 3.5 seconds.
30
Have you tried turning your phone off and
then back on again?
Turn your phone off and then back on, and
then tap the “OCEANUS Connected”
icon. Next, on the watch, hold down (C)
for at least 3.5 seconds.
30
Q2 I can’t connect while my phone is in
the Airplane Mode.
Connection with the watch is not possible
while the phone’s Airplane Mode is enabled.
After disabling the phone’s Airplane Mode, go
to the phone’s Home Screen and tap the
“OCEANUS Connected” icon. Next, on the
watch, hold down (C) for at least 3.5 seconds.
30
Q3 I can’t establish a connection after
disabling the watch’s auto time
adjustment feature.
On the watch, enable auto time adjustment,
and then hold down (C) for least 3.5 seconds.
lUsing OCEANUS Connected to Configure
Settings
lUsing Watch Operations to Configure
Settings
30
Q4 I changed the phone’s Bluetooth
from enabled to disabled, and now I
can’t connect anymore.
On your phone, re-enable Bluetooth, and then
go to the Home Screen and tap the
“OCEANUS Connected” icon. Next, on the
watch, hold down (C) for at least 3.5 seconds.
30
Q5 I can’t connect after turning off the
phone.
Turn your phone off and then back on, and
then tap the “OCEANUS Connected” icon.
Next, on the watch, hold down (C) for at least
3.5 seconds.
30
Phone-Watch Connection
Q1 I can’t establish a connection
between the phone and watch.
Have you tried turning your phone off and
then back on again?
Turn your phone off and then back on, and
then tap the “OCEANUS Connected”
icon. Next, on the watch, hold down (C)
for at least 3.5 seconds.
30
Has the watch been re-paired with the
phone?
Delete the pairing information from
OCEANUS Connected and your phone
(iPhone only), and then re-pair them.
lDeleting Pairing Information from
OCEANUS Connected
liPhone Only
Deleting the phone’s pairing
information
lC Pair the watch with a phone.
If you are unable to establish a
connection...
After deleting pairing information from the
watch, re-pair it with your phone.
lDeleting Pairing Information from the
Watch
lC Pair the watch with a phone.
Changing to a Different
Phone Model
Q1 Connecting the current watch to
another phone.
Delete the pairing information from your watch
and then pair it with the phone you want to
connect with.
lIf you purchase another phone
Watch Operation Guide 5652
18

Auto Time Adjustment by
Bluetooth Connection (Time
Adjustment)
Q1 When does the watch adjust its time?
The watch will connect with the phone and
perform auto time adjustment at around 12:30
a.m., 6:30 a.m., 12:30 p.m. and 6:30 p.m. The
connection is automatically terminated after
auto time adjustment is complete. Also, time
signal auto receive will be performed if there
has been no auto time adjustment based on
connection between the watch and phone for
more than one day.
Q2 Auto time adjustment is performed,
but the time setting is not correct.
Is auto time adjustment not being
performed according to its normal
schedule?
Note that auto time adjustment is not
performed for 24 hours after swapping of
the Home Time and World Time, or after
the time setting is adjusted manually on
the watch. Auto time adjustment will
resume 24 hours after either of the above
operations is performed.
Is auto time adjustment enabled?
Auto time adjustment will not be
performed at the scheduled times unless
it is enabled. Enable auto time
adjustment.
lUsing the Watch in a Medical Facility or
Aircraft
Q3 Time is not displayed correctly.
If your phone is unable to receive a signal
because you are outside its service range or
for some other reason, the watch may not be
able to display the correct time. If this
happens, connect the phone to its network
and then adjust the time setting.
Q4 Time signal reception is not
performed while watch is connected
with a phone.
The watch does not receive a time signal for
time correction while it is connected with a
phone. However, time signal auto receive is
performed if there has been no auto time
adjustment based on connection between the
watch and phone for more than one day.
Hand Movement and
Indications
Q1 I don’t know what mode the watch is
in.
You can determine the current mode by
checking the mode hand position. Use (C) to
navigate between modes.
lNavigating Between Modes
30
Q2 The second hand is jumping at two-
second intervals.
Battery power is low. Keep the watch exposed
to light until it recharges sufficiently.
lSolar Charging
Q3 All hands are stopped and buttons do
not work.
The battery is dead. Keep the watch exposed
to light until it recharges sufficiently.
lSolar Charging
Q4 The hands suddenly start moving at
high speed.
This is due to one of the reasons below, and
does not indicate malfunction. Simply wait
until normal hand movement resumes.
●The watch is recovering from a power
saving state.
lPower Saving
●A time calibration signal is being received
and the time setting is being adjusted.
lTime Adjustment Using a Time Signal
●Watch is connected with a phone to adjust
its time setting.
lAuto Time Adjustment
Q5 Hands are stopped and buttons do
not work.
This happens when the watch’s secondary
battery is momentarily low. Wait until the
recovery process is complete (for about 15
minutes). The watch will recover more quickly
if you place it in a brightly lit location.
Q6 Why is the current time indicated by
the watch is off by a certain amount
of time (nine hours, three hours and
15 minutes, etc.)?
The city setting is not correct. Select the
correct setting.
lSetting a Home City
Q7 The current time indicated by the
watch is off by one hour or 30
minutes.
The summer time setting is not correct. Select
the correct setting.
lConfiguring the Summer Time Setting
(Home City)
Q8 The hand and/or day indicator are not
aligned correctly.
Strong magnetism or impact can cause the
hands and/or the indicator to go out of
alignment. Adjust hand and/or day indicator
alignment.
lAdjusting Hand and Day Indicator
Alignment
●Check the information below to find out how
to align the hands and/or day indicator
manually.
lAdjusting Hand and Day Indicator
Alignment
Crown Operations
Q1 Nothing happens when I rotate the
crown.
If you do not perform any operation for about
two minutes after pulling out the crown
(approximately 30 minutes in the case of hand
and day indicator alignment), crown
operations will automatically become
disabled. Push the crown back in to its normal
position and then pull it out again to re-enable
crown operations.
lUsing the Crown
Other
Q1 I can’t find the information I need
here.
Visit the website below.
https://world.casio.com/support/
Watch Operation Guide 5652
19