Casio 5423 User manual

Operation Guide 5423
E-9
Charging the Watch
The face of the watch is a solar panel that generates power from light. The generated
power charges a built-in rechargeable battery, which powers watch operations. The
watch charges whenever it is exposed to light.
Charging Guide
Whenever you are not
wearing the watch, be sure
to leave it in a location
where it is exposed to light.
xBest charging
performance is achieved
by exposing the watch to
light that is as strong as
possible.
When wearing the watch,
makes sure that its face is
not blocked from light by the
sleeve of your clothing.
xThe watch may enter a
sleep state (page E-14) if its
face is blocked by your
sleeve even only partially.
E-8
To swap your Home City and World Time City ................................................ E-50
Auto Correction of Hand Home Positions......................................................... E-52
To trigger auto correction of hand home positions........................................... E-53
Adjusting Home Positions Manually.................................................................. E-55
To adjust home positions manually.................................................................. E-56
Troubleshooting .................................................................................................. E-60
Specifications ...................................................................................................... E-69
Operating Precautions ........................................................................................ E-71
User Maintenance................................................................................................ E-81
E-7
Timekeeping......................................................................................................... E-31
Configuring Home City Settings ........................................................................ E-32
To configure Home City settings...................................................................... E-32
To toggle the Home City time between standard time and
daylight saving time...................................................................................... E-34
Configuring Current Time and Date Settings Manually ................................... E-36
To change the current time setting manually ................................................... E-36
To change the current date setting manually................................................... E-39
Using the Stopwatch ........................................................................................... E-43
To perform elapsed time measurement ........................................................... E-44
To perform an elapsed time operation ............................................................. E-44
To pause at a split time.................................................................................... E-44
Checking the Current Time in a Different Time Zone....................................... E-46
To view the time in another time zone ............................................................. E-47
To specify standard time or daylight saving time (DST) for a city .................... E-48
E-6
Contents
About This Manual................................................................................................. E-2
Things to check before using the watch ............................................................. E-3
Charging the Watch............................................................................................... E-9
To recover from the sleep state ....................................................................... E-15
Radio Controlled Atomic Timekeeping.............................................................. E-16
To get ready for a receive operation ................................................................ E-21
To perform manual receive .............................................................................. E-24
To check the result of the latest receive operation........................................... E-26
Mode Reference Guide........................................................................................ E-28
To determine the watch’s current mode........................................................... E-29
To return to the Timekeeping Mode from any other mode............................... E-29
To select a mode.............................................................................................. E-30
E-5
The watch is now ready for use.
xFor details about the watch’s radio controlled timekeeping feature, see “Radio
Controlled Atomic Timekeeping” (page E-16).
E-4
2. Check the Home City and the daylight saving time (DST) setting.
Use the procedure under “To configure Home City settings” (page E-32) to configure your
Home City and daylight saving time settings.
Important!
Proper time calibration signal reception and World Time settings depend on correct
Home City, time, and date settings in the Timekeeping Mode. Make sure you
configure these settings correctly.
3. Set the current time.
xTo set the time using a time calibration signal
See “To get ready for a receive operation” (page E-21).
xTo set the time manually
See “Configuring Current Time and Date Settings Manually” (page E-36).
E-3
Things to check before using the watch
1. Hold down Cfor about two seconds to enter the Timekeeping Mode, and
then observe the movement of the
x
Second Hand.
Is the
x
Second Hand moving smoothly in one-second intervals?
Is the
x
Second Hand moving at
two-second intervals or is it stopped
completely?
Go to step 2.
The watch is charged sufficiently.
For details about charging, see
“Charging the Watch” (page E-9).
Power is low. Charge the watch by placing
it in a location where it is exposed to light.
For details, see “Charging the Watch”
(page E-9).
NO
YES
YES
NEXT
E-2
About This Manual
Button operations are indicated using the letters A
through Dshown in the illustration.
Hand Functions
z
Hour Hand
x
Second Hand
c
Minute Hand
v
24-hour Hand: Indicates the current 24-hour
timekeeping hour.
b
Left Dial Hands: Indicate a time, in 24-hour format,
depending on the current mode.
n
Right Dial Hand: Indicates the current day of the week
and current mode.
m
Day Indicator
This User’s Guide uses numbers shown above to identify watch hands and indicators.
30
z c
b nv m
x
E-1
ENGLISH
Congratulations upon your selection of this CASIO watch.
This watch does not have a city code that corresponds to the UTC offset of –3.5
hours. Because of this, the radio-controlled atomic timekeeping function will not
display the correct time for Newfoundland, Canada.
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage
or loss suffered by you or any third party arising through the use of your watch or its
malfunction.
MA1404-EA © 2014 CASIO COMPUTER CO., LTD.

Operation Guide 5423
E-19
Japanese Signals Chinese Signal
Fukushima
500 kilometers
Fukuoka/Saga
1,000 kilometers
1,500 kilometers
Changchun500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
E-18
Approximate Reception Ranges
UK and German Signals North American Signal
Anthorn
500 kilometers
1,500 kilometers
Mainflingen
The Anthorn signal is receivable
within this area.
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
E-17
If your Home City Code setting is this: The watch can receive the signal from
the transmitter located here:
LONDON (LON), PARIS (PAR), ATHENS (ATH) Anthorn (England), Mainflingen (Germany)
HONG KONG (HKG) Shangqiu City (China)
TOKYO (TYO) Fukushima (Japan), Fukuoka/Saga (Japan)
HONOLULU (HNL), ANCHORAGE (ANC),
LOS ANGELES (LAX), DENVER (DEN),
CHICAGO (CHI), NEW YORK (NYC)
Fort Collins, Colorado (United States)
Important!
xThe areas covered by HONOLULU (HNL) and ANCHORAGE (ANC) are quite far
from the calibration signal transmitters, so certain conditions may cause reception
problems.
xWhen HONOLULU (HNL) or HONG KONG (HKG) is selected as the Home City,
only the time and date are adjusted according to the time calibration signal. You
need to switch manually between standard time and daylight saving time (DST) if
required. See “To toggle the Home City time between standard time and daylight
saving time” (page E-34) for information about how to do this.
E-16
Radio Controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
However, when using the watch outside of areas covered by time calibration signals,
you will have to adjust the settings manually as required. See “Configuring Current
Time and Date Settings Manually” (page E-36) for more information.
This section explains how the watch updates its time settings when the city code
selected as the Home City is in Japan, North America, Europe, or China, and is one
that supports time calibration signal reception.
E-15
To recover from the sleep state
Move the watch to a well-lit area or press any button.
E-14
Power Saving
Power Saving enters a sleep state automatically whenever the watch is left for a
certain period in an area where it is dark. The table below shows how watch functions
are affected by Power Saving.
xThere actually are two sleep state levels: “second hand sleep” and “function sleep”.
Elapsed Time in Dark Operation
60 to 70 minutes (second hand
sleep)
x
x
Second Hand only stopped at 12 o’clock, all other
functions enabled
6 or 7 days (function sleep) xAll functions, including analog timekeeping, disabled
xInternal timekeeping maintained
xThe watch will not enter a sleep state between 6:00 a.m. and 9:59 p.m. If the watch
is already in a sleep state when 6:00 a.m. arrives, however, it will remain in the
sleep state.
xThe watch will not enter a sleep state while it is in the Stopwatch Mode.
E-13
Charging Times
Exposure Level (Brightness)
Daily
Operation
*1
Level Change *2
Level 3 Level 2 Level 1
Outdoor sunlight (50,000 lux) 8 minutes 2 hours 24 hours
Window sunlight (10,000 lux) 30 minutes 6 hours 89 hours
Window sunlight on cloudy day
(5,000 lux) 48 minutes 9 hours 144 hours
Indoor fluorescent lighting (500 lux) 8 hours 97 hours – – –
*1 Approximate exposure each day to generate power for normal daily operation.
*2 Approximate amount exposure time required to take power up one level.
xThe above exposure times all are for reference only. Actual exposure times depend
on lighting conditions.
xFor details about the operating time and daily operating conditions, see the “Power
Supply” section of the Specifications (page E-70).
E-12
Level Hand Movement Function Status
1 Normal. All functions enabled.
2
x
x
Second Hand moving at two-second
intervals.
m
m
Day Indicator changes to 1(home
position).
Time calibration signal reception.
3
x
x
Second Hand stopped.
z
z
Hour Hand and c
c
Minute Hand stopped
at 12 o’clock.
All functions disabled.
xWhen power drops to Level 3, all functions will be disabled but the watch will
continue to keep time internally for about one week. If you recharge the battery
sufficiently during this period, the analog hands will move automatically to the
correct setting and regular timekeeping will resume. After one week, all settings
(including timekeeping) will be cleared. Recharging the battery will reset all settings
to their initial factory defaults.
E-11
Power Levels
You can get an idea of the watch’s power level by
observing the movement of the
x
Second Hand in the
Timekeeping Mode.
xIf the
x
Second Hand is moving normally in one-
second intervals, power is at Level 1.
xIf the
x
Second Hand is moving at two-second
intervals, power is at Level 2, which is quite low (Low
battery alert). Expose the watch to light as soon as
possible so it can charge.
Moves at two-second
intervals.
30
z c
xm
E-10
Warning!
Leaving the watch in bright light for charging can cause it to become quite hot.
Take care when handling the watch to avoid burn injury. The watch can become
particularly hot when exposed to the following conditions for long periods.
xOn the dashboard of a car parked in direct sunlight
xToo close to an incandescent lamp
xUnder direct sunlight
Important!
xKeep the watch in an area normally exposed to bright light when storing it for long
periods. This helps to ensure that power does not run down.
xStoring the watch for long periods in an area where there is no light or wearing it in
such a way that it is blocked from exposure to light can cause power to run down.
Make sure that the watch is exposed to bright light whenever possible.

Operation Guide 5423
E-29
Selecting a Mode
With this watch, everything starts from the Timekeeping Mode.
To determine the watch’s current mode
Check the position of the
n
Right Dial Hand as shown
under “To select a mode” (page E-30).
To return to the Timekeeping Mode from any other
mode
Hold down Cat least two seconds to enter the
Timekeeping Mode.
30
n
E-28
Mode Reference Guide
Your watch has three “modes”. The mode you should select depends on what you
want to do.
To do this: Enter this mode: See:
xView the current time in your Home City and in one
of 29 other cities around the globe
xView the current date in the Home City
xConfigure Home City and daylight saving time
(DST) settings
xPerform a time calibration receive operation
xConfigure time and date settings manually
Timekeeping Mode E-31
Use the stopwatch to measure elapsed time Stopwatch Mode E-43
View the current time in one of 29 cities (time zones)
around the globe World Time Mode E-46
E-27
Radio-controlled Atomic Timekeeping Precautions
xStrong electrostatic charge can result in the wrong time setting.
xEven if a receive operation is successful, certain conditions can cause the time
setting to be off by up to one second.
xThe watch is designed to update the date and day of the week automatically for
the period January 1, 2000 to December 31, 2099. Updating of the date by signal
reception will no longer be performed starting from January 1, 2100.
xIf you are in an area where signal reception is not possible, the watch keeps time
with the precision noted in “Specifications” (page E-69).
xThe receive operation is disabled under any of the following conditions.
−While power is at Level 2 or lower (page E-11)
−When the watch is in the function sleep state (Power Saving, page E-14)
E-26
To check the result of the latest receive operation
In the Timekeeping Mode, press A.
xThe
x
Second Hand will move to Y (YES) for five
seconds if the latest receive operation was successful,
or N (NO) if it was not. After that, regular timekeeping
will resume.
xYou can return to the Timekeeping Mode manually by
pressing Awhile the
x
Second Hand is pointing to
Y(YES) or N(NO).
Note
xThe
x
Second Hand will indicate N (NO) if you have
adjusted the time or date setting manually since the
latest receive operation.
30
x
E-25
3. The receive operation is complete when the
x
Second
Hand moves to Y (YES) or N (NO) for about five
seconds, and then resumes regular timekeeping.
xYou can return to the Timekeeping Mode manually by
pressing Awhile the
x
Second Hand is pointing to
Y(YES) or N(NO).
xWhen the receive operation is successful, the watch
adjusts the time setting accordingly. It does not adjust
the setting if the operation failed.
Note
xTo interrupt a receive operation and return to the
Timekeeping Mode, press any button.
30
x
E-24
To perform manual receive
1. In the Timekeeping Mode, keep Adepressed (for about two seconds) as the
x
Second Hand goes through the following sequence.
xMoves to Y(or YES for some models) or N(NO) to indicate the last signal
reception result, then to R(READY).
2. The
x
Second Hand indicates the operations the watch is currently performing.
When the x
x
Second
Hand is pointed here: It means this:
R (READY) Watch is setting up for reception.
W (WORK) Reception is in progress.
Y (YES) Reception was completed
successfully.
N (NO) Reception failed for some reason.
xIf signal reception is unstable, the x
x
Second Hand
may move between W(WORK) and R(READY).
30
x
E-23
3. What you should do next depends on whether you are using Auto Receive or
Manual Receive.
xAuto Receive: Leave the watch over night in the location you selected in step 2.
See “Auto Receive” on page E-23 for details.
xManual Receive: Perform the operation under “To perform manual receive” on
page E-24.
Auto Receive
xWith Auto Receive, the watch performs the receive operation each day
automatically up to six times (up to five times for the Chinese calibration signal)
between the hours of midnight and 5 a.m. (according to the Timekeeping Mode
time). When any receive operation is successful, none of the other receive
operations for that day are performed.
xWhen a calibration time is reached, the watch will perform the receive operation
only if it is in the Timekeeping Mode or World Time Mode. The receive operation is
not performed if a calibration time is reached while you are configuring settings.
E-22
xThe receive operation takes from two to seven minutes, but in some cases it
can take as long as 14 minutes. Take care that you do not perform any button
operation or move the watch during this time.
xSignal reception may be difficult or even impossible under the conditions
described below.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances,
office
equipment,
or a mobile
phone
Near a
construction
site, airport,
or other
sources of
electrical
noise
Near
high-tension
power lines
Among
or behind
mountains
E-21
xUsing this watch in a country covered by a time calibration that is different from the
countries it supports may result in incorrect time indication due to local application
of summer time, etc.
To get ready for a receive operation
1. Confirm that the watch is in the Timekeeping Mode. If it isn’t, hold down Cfor
about two seconds to enter the Timekeeping Mode.
2. Place the watch in a location where signal reception is good.
xPosition the watch as shown in the
nearby illustration, with 6 o’clock
pointed towards a window. Make
sure there are no metal objects
nearby.
xSignal reception normally is better
at night.
6 o’clock
or
E-20
xSignal reception may not be possible at the distances noted below during certain
times of the year or day. Radio interference may also cause problems with
reception.
−Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310
miles)
−Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
−Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
−Shangqiu (China) transmitter: 500 kilometers (310 miles)
xAs of December 2013, China does not use Daylight Saving Time (DST). If China
does go to the Daylight Saving Time system in the future, some functions of this
watch may no longer operate correctly.

Operation Guide 5423
E-39
To change the current date setting manually
1. In the Timekeeping Mode, keep Adepressed (for
about five seconds) as the
x
Second Hand goes
through the following sequence.
xMoves to Y(or YES for some models) or N(NO)
to indicate the last signal reception result, then to
R(READY), and then to the city code of the currently
selected Home City.
2. Press Ctwice so the
n
Right Dial Hand moves to the
tens digit and the
x
Second Hand moves to the ones
digit of the current year setting.
xThis is the year setting mode.
xThe year can be set in the range of 2000 to 2099.
3. Use Dand Bto change the year setting.
xEach press of Bwill move the
n
Right Dial Hand and change the tens digit of
the year setting.
n
00
10
20
30
40
50
60
70
80
90
Setting the year (tens digit)
E-38
4. Use D(+) and B(–) to change the time (hour and minute) setting.
xEach press of either button will move the hands (
z
Hour Hand and
c
Minute
Hand) one minute.
xHolding down Dor Bwill start high-speed
z
Hour Hand and
c
Minute Hand
movement in the applicable direction. To stop high-speed hand movement,
press any button.
xThe
v
24-hour Hand and
z
Hour Hand move in sync with each other.
xWhen setting the time, make sure that the
v
24-hour Hand indicates the proper
a.m./p.m. hour.
xIf you want to change the date setting at this time, press Cand perform the
procedure starting from step 3 under “To change the current date setting
manually” (page E-39).
5. After the time setting is the way you want, press Ato return to the Timekeeping
Mode.
xThis will cause the
x
Second Hand to move automatically to 12 o’clock and
resume movement from there.
E-37
2. Change the Home City and daylight saving time (DST)
settings, if you want.
xFor details about these settings, see steps 2 and 3
under “To configure Home City settings” (page E-32).
xIn the following steps, each press of Ccycles
between settings as shown below.
Home city/DST Hour/Minute Year
Day Month
C
C
C
C
C
3. Press C.
xThe
x
Second Hand and
n
Right Dial Hand will move to their 12 o’clock
positions. This is the time setting mode.
30
n
v
z x c
E-36
Configuring Current Time and Date Settings Manually
You can configure current time and date settings manually when the watch is unable
to receive a time calibration signal.
To change the current time setting manually
1. In the Timekeeping Mode, keep Adepressed (for about
five seconds) as the
x
Second Hand goes through the
following sequence.
xMoves to Y(or YES for some models) or N(NO)
to indicate the last signal reception result, then to
R(READY), and then to the city code of the currently
selected Home City.
xAt this time, the
n
Right Dial Hand will indicate the
Home City’s current daylight saving time setting (STD
or DST).
30
nx
E-35
xIn the city code setting mode, the
n
Right Dial Hand indicates the current
daylight saving time setting as STD (standard time) or DST (daylight saving
time).
xNote that you cannot switch between STD (standard time)/DST (daylight saving
time) while UTC is selected as your Home City.
3. After the setting is the way you want, press Ato return to the Timekeeping Mode.
Note
xAfter you specify a city code, the watch will use UTC* offsets in the World Time
Mode to calculate the current time for other time zones based on the current time
in your Home City.
xSelecting some city codes makes it possible for the watch to receive the time
calibration signal for the corresponding area automatically. See page E-16 for details.
*Coordinated Universal Time, the world-wide scientifi
c standard of timekeeping. The
reference point for UTC is Greenwich, England.
E-34
xIn the city code setting mode, the
n
Right Dial Hand indicates the current
daylight saving time setting as STD (standard time) or DST (daylight saving
time).
xNote that you cannot switch between STD (standard time)/DST (daylight saving
time) while UTC is selected as your Home City.
4. After all the settings are the way you want, press Ato return to the Timekeeping
Mode.
To toggle the Home City time between standard time and daylight saving time
1. Perform the step 1 under “To confi
gure Home City settings” on page E-32.
xEach time you select a city code, the
z
Hour Hand,
c
Minute Hand, and
v
24-
hour Hand move to the current time for that city code. Do not perform the next
operation until these hands stop moving.
2. Press Bto toggle the time for the city code of the currently selected Home City
between STD (standard time)/DST (daylight saving time).
E-33
xThe watch will exit the setting mode automatically if
you do not perform any operation for about two or
three minutes.
xFor details about city codes, see the “City Code
Table” at the back of this manual.
2. To change the Home City setting, press Dto move the
x
Second Hand clockwise.
xKeep pressing Duntil the
x
Second Hand is pointing
at the city code you want to select as your Home City.
xEach time you select a city code, the
z
Hour Hand,
c
Minute Hand,
v
24-hour Hand and
m
Day
Indicator move to the current time and date for that
city code. Do not perform the next operation until
these hands stop moving.
3. Press Bto toggle the time for the currently selected city code between STD
(standard time)/DST (daylight saving time).
30
x
z c
nv m
E-32
Configuring Home City Settings
There are two Home City settings: actually selecting the Home City and selecting
either standard time or daylight saving time (DST).
To configure Home City settings
Note
xThis watch does not have a city code that
corresponds to Newfoundland.
1. In the Timekeeping Mode, keep Adepressed (for
about five seconds) as the
x
Second Hand goes
through the following sequence.
xMoves to Y(or YES for some models) or N(NO)
to indicate the last signal reception result, then
to R(READY), and then to the city code of the
currently selected Home City.
xThis indicates the city code setting mode.
30
x
E-31
Timekeeping
Use the Timekeeping Mode to view the current time and date. To enter the
Timekeeping Mode from any other mode, hold down Cfor about two seconds.
Hand Functions
z
Hour Hand
x
Second Hand
c
Minute Hand
v
24-hour Hand
b
Left Dial Hands: Indicate the current time in the World
Time City (page E-46) in 24-hour format.
n
Right Dial Hand: Indicates the day of the week.
m
Day Indicator
30
z cx
b nv m
E-30
To select a mode
Press Cto cycle between the modes as shown below. The
n
Right Dial Hand
indicates the currently selected mode.
n
Timekeeping Mode Stopwatch Mode
World Time Mode
The hand indicates the
day of the week (SU,
M, T, W, T, F, S).
The hand points to 0(at
12 o’clock).
The hand points to STD
or DST.
C

Operation Guide 5423
E-49
Swapping your Home City and World Time City
You can use the procedure below to swap your Home City and World Time City. This
capability can come in handy when you frequently travel between two locations in
different time zones.
The following example shows what happens when the
Home City and World Time City are swapped while the
Home City originally is TOKYO (TYO) and the World
Time City is NEW YORK (NYC).
Home City World Time City
Before
swapping
TOKYO (TYO)
10:08 p.m.
(Standard time)
NEW YORK (NYC)
9:08 a.m.
(Daylight saving time)
After
swapping
NEW YORK (NYC)
9:08 a.m.
(Daylight saving time)
TOKYO (TYO)
10:08 p.m.
(Standard time)
30
x
E-48
To specify standard time or daylight saving time (DST) for a city
1. In the World Time Mode, use Dto select the city code
whose setting you want to change.
xWait until the
b
Left Dial Hands complete their move
to the time in the currently selected World Time
City. You will not be able to perform step 2 of this
procedure until the hands stop moving.
2. Hold down Afor about two seconds until the
n
Right
Dial Hand toggles to STD (standard time) or DST
(daylight saving time).
xNote that you cannot switch between STD (standard
time)/DST (daylight saving time) while UTC is
selected as the World Time City.
xNote that the STD (standard time)/DST (daylight
saving time) setting affects only the currently selected
time zone. Other time zones are not affected.
Hold down
Afor two
seconds
30
nb
30
E-47
To view the time in another time zone
1. Use Cto move the
n
Right Dial Hand to STD or DST.
xThe
x
Second Hand will move to the city code of the currently selected World
Time City.
2. Use Dto move the
x
Second Hand to the city code you want to select as the
World Time City.
xThe
b
Left Dial Hands will move to the current time in the time zone of the
current city code. At this time, the
z
Hour Hand and
c
Minute Hand will
continue to indicate the current time in the Home City.
xFor full information on city codes, see the “City Code Table” at the back of this
manual.
xIf you think that the time indicated for the selected time zone is not correct, it
probably means that there is something wrong with your Home City settings. Use
the procedure under “To configure Home City settings” (page E-32) to correct the
Home City settings.
E-46
Checking the Current Time in a Different Time Zone
You can use the World Time Mode to view the current time in one of 29 time zones
around the globe. The city that is currently selected in the World Time Mode is called
the “World Time City”.
Hand Functions
x
Second Hand:
Indicates the currently selected World Time City.
b
Left Dial Hands:
Indicate the current time in the selected World Time
City in 24-hour format.
n
Right Dial Hand:
Indicates the current STD (standard time) or DST
(daylight saving time) setting of the currently selected
time zone.
30
b
n
x
E-45
Note
xThe Stopwatch Mode can indicate elapsed time up to 23 hours, 59 minutes, 59.95
seconds.
xDbutton operation (split, reset) is disabled while hands are moving at high speed
following a reset operation and when transitioning from a split time back to normal
elapsed timekeeping.
xOnce started, stopwatch timing continues until you press Bto stop it, even if you
exit the Stopwatch Mode to another mode and even if timing reaches the stopwatch
limit defined above.
xYou can press Bto start an elapsed time operation immediately after entering the
Stopwatch Mode, even if the watch’s hands are still moving to their initial Stopwatch
Mode positions. Note, however, that if the stopwatch was not reset after the last
elapsed time operation, timing will restart from where it was last stopped, and not
from 0.
xThe
n
Right Dial Hand indicates the 1/20-second count for the first 30 seconds of
a stopwatch elapsed time operation. After that, the hand stops at 0. 1/20-second
timing continues internally after the first 30 seconds, and the
n
Right Dial Hand will
move to the current value whenever B(Stop) or D(Split) is pressed.
E-44
To perform elapsed time measurement
1. Use Cto move the
n
Right Dial Hand to 0.
2. Now you can perform either of following stopwatch operations.
To perform an elapsed time operation
BB B B D
Start Stop (Resume) (Stop) Reset
To pause at a split time
BDNormal stopwatch hand movement will
resume automatically after five seconds.
B D
Start Split Stop Reset
E-43
Using the Stopwatch
The stopwatch measures elapsed time and split times.
Hand Functions
x
Second Hand: Indicates the stopwatch seconds
count.
b
Left Dial Hands: Indicate the stopwatch hours and
minutes.
n
Right Dial Hand: Indicates the stopwatch 1/20-second
count.
30
x
n
b
E-42
Note
xThe watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to
change it except after you have the watch’s rechargeable battery replaced or after
power drops to Level 3.
E-41
7. Use D(+) and B(–) to change the
m
Day Indicator
setting.
xIf you want to change the time setting at this time,
press Cand then perform the procedure starting
from step 3 under “To change the current time
setting manually” (page E-36).
8. After the settings are the way you want, press Ato
return to the Timekeeping Mode.
xThis will cause the
x
Second Hand to move
automatically to 12 o’clock and resume movement
from there.
xThe day of the week indicated by the
n
Right Dial
Hand changes automatically in accordance with the
date (year, month, and day).
30
x
n
m
E-40
xEach press of Dwill move the
x
Second Hand
and change the ones digit of the year setting.
4. After the year setting is the way you want, press C.
xThis is the month setting mode.
5. Use Dto move the
x
Second Hand to the month
setting you want.
6. After the month setting is the way you want, press
C.
xThe
x
Second Hand will move to 12 o’clock, and
the watch will enter the day setting mode.
01
3
4
5
6
7
8
9
2
Setting the month
@
Dec
Jan
Feb
Mar
Apr
Jun
May
Nov
Jul
Oct
Sep
Aug
x
Setting the year (ones digit)

Operation Guide 5423
E-59
5. After confirming that the
b
Left Dial Hands are in the
correct home position, press C. This will advance to
n
Right Dial Hand home position adjustment.
xThe
n
Right Dial Hand is in the correct home position
if it is pointing at 0. If it isn’t, use D(+) and B(–) to
move it to 0.
6. After confirming that the
n
Right Dial Hand is in the
correct home position, press C. This will advance to
day home position adjustment.
xThe
m
Day Indicator is in the correct home position
if it shows 1. If the 1is not in the center of the
m
Day
Indicator, use D(+) and B(–) to center it.
7. Press Ato return to the Timekeeping Mode.
xThe
m
Day Indicator moves to the current day, and then the
z
Hour Hand and
the
c
Minute Hand will move to the current time. Wait until everything stops
moving.
1
nb m
E-58
3. After confirming that the
x
Second Hand is at the proper home position, press C.
This will switch to
z
Hour Hand and
c
Minute Hand home position adjustment.
xThe
z
Hour Hand and
c
Minute Hand are at their proper home positions if
they both move to 12 o’clock. The
v
24-hour Hand also will move along with
z
Hour Hand movement, and cannot be adjusted individually. If the hands are
not positioned correctly, use D(+) and B(–) to move them to their proper
home positions.
4. After confirming that the
z
Hour Hand and
c
Minute
Hand are in their correct home positions, press C.
This will switch to
b
Left Dial Hands home position
adjustment.
xThe
b
Left Dial Hands are at their proper home
positions if they both move to 24. If the hands are not
positioned correctly, use D(+) and B(–) to move
them to 24.
30
zc
vb
E-57
xEach press of Cin the home position adjustment mode will cycle through the
adjustment settings as shown below.
x
Second
z
Hour/
c
Minute/
v
24-hour
b
Left Dial Hands
n
Right Dial Hand
m
Day Indicator
C
C
C
C
C
xWhen adjusting a hand or the date home position, it is recommended that after
you move to a proper home position, you press Bto move the setting back one
step. Next, press Dagain to return it to the home position. This helps to ensure
better home position adjustment accuracy.
E-56
To adjust home positions manually
1. Hold down Cfor about two seconds until the
x
Second
Hand stops and then starts moving again.
2. Hold down Dfor about three seconds.
xThe
x
Second Hand will start to move when you first
press D. Keep Ddepressed until the
x
Second
Hand stops.
xThe watch is now in the home position adjustment
mode.
xThe watch will exit the adjustment mode automatically
if you do not perform any operation for about two or
three minutes.
xFirst is
x
Second Hand home position adjustment.
xIf the
x
Second Hand moves to 12 o’clock, it is in the
correct home position. If it doesn’t, use Dto move it
to 12 o’clock.
30
cz x
v b n m
E-55
Adjusting Home Positions Manually
Strong magnetism or impact can cause the hands and/or date of the watch to be
off, even if the watch is able to perform the signal receive operation. If this happens,
perform the applicable home position adjustment procedures in this section.
xHand home position adjustment is not required if the time and day settings are
correct.
xYou also can use auto correction of the hand home positions (page E-52) to correct the
home positions of the
z
Hour Hand,
c
Minute Hand, and
x
Second Hand.
Note
xAny time after you enter the home position adjustment mode in step 1 of the
following procedure, you can return to the Timekeeping Mode by pressing A. The
watch also will return to the Timekeeping Mode automatically if you do not perform
any operation for about two or three minutes in the home position adjustment
mode. In either case, any adjustments you made before the watch returned to the
Timekeeping Mode will be applied.
E-54
xIf you release Dwhen the
x
Second Hand stops the first time (after about three
seconds) in the above operation, the watch will enter the home position adjustment
mode, which is described under “Adjusting Home Positions Manually” (page E-55). If
this happens, press Ato return to the Timekeeping Mode and then perform the
above operation again.
xManually triggered auto correction of hand home positions performs the following
two steps.
1. The hands will move automatically in order to determine the home positions of the
watch.
2. After the hand home positions are determined, the watch will return to normal
timekeeping automatically. This completes the correction operation.
E-53
xIf hand positions are off by one hour or more, correct them using the procedure
under “To trigger auto correction of hand home positions” (page E-53) or “Adjusting
Home Positions Manually” (page E-55).
To trigger auto correction of hand home positions
xPerform the following procedure when the time setting
is off.
In the Timekeeping Mode, hold down Dfor about six
seconds until the
x
Second Hand completes one full
revolution.
xThough the
x
Second Hand will stop momentarily about
three seconds after you hold down D, do not release
the button yet. Wait until the
x
Second Hand completes
a full revolution before you release D.
xTo interrupt an ongoing correction operation and return
to the Timekeeping Mode, press Dagain.
30
cz
x
E-52
Auto Correction of Hand Home Positions
Strong magnetism or impact can cause the hands and/or day setting to be off, even
if the watch is able to perform the signal receive operation. Auto correction of hand
home positions correct the hand position automatically.
xAuto correction is performed in the Timekeeping Mode only.
xAuto correction corrects the positions of the
z
Hour Hand,
c
Minute Hand,
and
x
Second Hand. For the dial hands and day, you must perform the manual
adjustment procedure under “Adjusting Home Positions Manually” (page E-55).
xEach hour, the watch performs automatic correction of the hand positions from
–55 minutes to +5 minutes.
xYou also can trigger auto correction of hand home positions manually, if you
want. See “To trigger auto correction of hand home positions” (page E-53) for more
information.
xAuto correction of hand home positions can take up to three and a half minutes to
complete.
E-51
xThe
b
Left Dial Hands will indicate the current time in your new World Time City.
Note
xIf your current World Time City supports time calibration signal reception, making it
your Home City enables calibration signal reception for that city.
E-50
To swap your Home City and World Time City
1. In the World Time Mode, use Dto select the World
Time City you want.
xIn this example, you would move the
x
Second
Hand to NEW YORK (NYC) in order to select New
York as the World Time City.
xWait until the
b
Left Dial Hands complete their
move to the time in the currently selected World
Time City. You will not be able to perform step 2 of
this procedure until the hands stop moving.
2. Hold down Bfor about three seconds until the
x
Second Hand starts to move.
xThis will make the World Time City (NEW YORK (NYC) in this example) your new
Home City. At the same time, it will change the Home City you had selected prior
to step 2 (TOKYO (TYO) in this example), to your World Time City.
xAfter swapping the Home City and World Time City, the watch will stay in the
World Time Mode. The
x
Second Hand will point to your new World Time City
(TOKYO (TYO) in this example).
30
x
b

Operation Guide 5423
E-69
Specifications
Accuracy at normal temperature: ± 15 seconds a month (with no signal calibration)
Timekeeping: Hour, minutes (hand moves every 10 seconds), seconds, 24-hour,
day, day of the week
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City code (can be assigned one of 29 city codes and Coordinated
Universal Time); Daylight Saving Time (summer time) / Standard Time
Time Calibration Signal Reception: Auto receive up to six times a day (5 times a
day for the Chinese calibration signal; Remaining auto receives
cancelled as soon as one is successful); Manual receive
Receivable Time Calibration Signals:
Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz);
Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz); Fukushima,
Japan (Call Sign: JJY, Frequency: 40.0 kHz); Fukuoka/Saga, Japan
(Call Sign: JJY, Frequency: 60.0 kHz); Fort Collins, Colorado, the
United States (Call Sign: WWVB, Frequency: 60.0 kHz); Shangqiu City,
Henan Province, China (Call Sign: BPC, Frequency: 68.5 kHz)
E-68
■Signal reception is being performed successfully, but the time and/or day is
wrong.
Possible Cause Remedy Page
Your Home City setting is wrong. Check your Home City setting and correct
it, if necessary. E-32
The watch may have been exposed
to magnetism or strong impact, which
has caused problems with proper
hand and day alignment.
Adjust the watch’s hand and day home
positions. E-55
E-67
■Auto Receive is not performed or I cannot perform Manual Receive.
Possible Cause Remedy Page
The watch is in the Stopwatch Mode.
Auto Receive is not performed while the
watch is in the Stopwatch Mode. Hold
down Cfor about two seconds to enter the
Timekeeping Mode.
E-29
Your Home City setting is wrong. Check your Home City setting and correct
it, if necessary. E-32
There is not enough power for signal
reception. Expose the watch to light to charge it. E-9
E-66
■The current time setting changes after I set it manually.
You may have the watch configured for Auto Receive of the time calibration signal
(page E-23), which will cause the time to be adjusted automatically according to your
currently selected Home City. If this results in the wrong time setting, check your
Home City setting and correct it, if necessary (page E-32).
■The current time setting is off by one hour.
Possible Cause Remedy Page
Signal reception on a day for
switching between STD (standard
time)/DST (daylight saving time) may
have failed for some reason.
Perform the operation under “To get ready
for a receive operation”. The time setting
will be adjusted automatically as soon as
signal reception is successful.
E-21
If you are unable to receive the time
calibration signal, change the STD
(standard time)/DST (daylight saving time)
setting manually.
E-34
E-65
■The
x
Second Hand indicates N (NO) when I check the result of the latest
receive operation.
Possible Cause Remedy Page
xYou are wearing or moving the
watch, or performing a button
operation during the signal receive
operation.
xThe watch is in an area with poor
reception conditions.
Keep the watch in an area where reception
conditions are good while the signal receive
operation is being performed.
E-21
You are in an area where signal
reception is not possible for some
reason.
See “Approximate Reception Ranges”. E-18
The calibration signal is not being
transmitted for some reason.
x
Check the website of the organization
that maintains the time calibration signal
in your area for information about its
down times.
xTry again later.
—
E-64
■The
x
Second Hand starts to move at one-second intervals, but then suddenly
returns to moving at two-second intervals.
The watch probably is not sufficiently charged yet. Continue keeping it exposed to
light.
Time Calibration Signal
The information in this section applies only when LONDON (LON), PARIS (PAR),
ATHENS (ATH), HONOLULU (HNL), ANCHORAGE (ANC), LOS ANGELES (LAX),
DENVER (DEN), CHICAGO (CHI), NEW YORK (NYC), HONG KONG (HKG), or
TOKYO (TYO) is selected at the Home City. You need to adjust the current time
manually when any other city is selected as the Home City.
E-63
World Time Mode
■The World Time indicated by the
b
Left Dial Hands in the World Time Mode is
one hour off from the actual time in the selected time zone.
The STD (standard time)/DST (daylight saving time) setting of the selected World
Time City may be wrong. Select the correct STD (standard time)/DST (daylight saving
time) setting (page E-48).
■The World Time indicated by the
b
Left Dial Hands in the World Time Mode
is off.
Your Home City setting may be wrong. Check your Home City setting and correct it, if
necessary (page E-32).
Charging
■The watch does not resume operation after I expose it to light.
This can happen after the power level drops to Level 3 (page E-11). Continue exposing
the watch to light until the
x
Second Hand starts moving normally (at one-second
intervals).
E-62
■The current time setting is off by one hour.
If you are using the watch in an area where time calibration signal reception is
possible, see “To configure Home City settings” (page E-32).
If you are using in the watch in an area where time calibration signal reception is
not possible, you may need to change your Home City’s STD (standard time)/DST
(daylight saving time) setting manually. Use the procedure under “To toggle the Home
City time between standard time and daylight saving time” (page E-34) to change the
STD/DST setting.
■The hands and/or day indications are off.
This could indicate that the watch has been exposed to magnetism or strong impact,
which has caused problems with proper hand and day alignment. Adjust the watch’s
hand and day home position alignment (page E-52).
E-61
■The hands of the watch suddenly start moving at high speed, even when I do
not perform any operation.
This could be due to any one of the following causes. In all cases, the hand movement
does not indicate malfunction, and should stop shortly.
xThe watch is recovering from a sleep state (page E-14).
xThe time setting is being adjusted following a successful auto time calibration
signal receive operation (page E-16).
■The current time setting is off by hours.
Your Home City setting may be wrong. Check your Home City setting and correct it, if
necessary (page E-32).
E-60
Troubleshooting
Hand Movement and Position
■I lost track of what mode the watch is in.
Refer to “To select a mode” (page E-30). To return directly to the Timekeeping Mode from
any other mode, hold down Cfor about two seconds.
■The
x
Second Hand is moving at two-second intervals.
■All the watch’s hands are stopped at 12 o’clock and none of the buttons work.
Power may be low. Expose the watch to light until the
x
Second Hand starts moving
normally, at one-second intervals (page E-11).

Operation Guide 5423
E-70
Stopwatch: Measuring capacity: 23:59'59.95"
Measuring unit: 1/20 second
Measuring mode: Elapsed time, split time
World Time: 29 cities (29 time zones) and Coordinated Universal Time
Other: Standard Time/Daylight Saving Time (summer time); Home City/World Time
City swapping
Other: Power Saving; Low Battery Alert; Auto Correction of Hand Home Positions
Power Supply: Solar panel and one rechargeable battery
Approximate battery operating time: 5 months (no exposure to light after a full
charge; one signal reception of approximately 4 minutes per day)
L-1
City Code Table
L-4
x Based on data as of December 2013.
x The rules governing global times (UTC offset and GMT differential) and summer
time are determined by each individual country.
L-3
City Code City UTC Offset/GMT Differential
JEDDAH ( J E D ) Jeddah +3
TEHRAN (THR) Tehran +3.5
DUBAI (DXB) Dubai +4
KABUL (KBL) Kabul +4.5
KARACHI (KHI) Karachi +5
DELHI (DEL) Delhi +5.5
DHAKA ( D A C ) Dhaka +6
YANGON (RGN) Yangon +6.5
BANGKOK (BKK) Bangkok +7
HONG KONG (HKG) Hong Kong +8
TOKYO (TYO) Tokyo +9
ADELAIDE (ADL) Adelaide +9.5
SYDNEY (SYD) Sydney +10
NOUMEA (NOU) Noumea +11
WELLINGTON (WLG) Wellington +12
L-2
City Code Table
City Code City UTC Offset/GMT Differential
PAGO PAGO (PPG) Pago Pago –11
HONOLULU (HNL) Honolulu –10
ANCHORAGE ( A N C ) Anchorage –9
LOS ANGELES (LAX) Los Angeles –8
DENVER ( D E N ) Denver –7
CHICAGO (CHI) Chicago –6
NEW YORK ( N Y C ) New York –5
SANTIAGO (SCL) Santiago –4
RIO Rio De Janeiro –3
F. DE NORONHA (FEN) Fernando de Noronha –2
PRAIA (RAI) Praia –1
UTC 0
LONDON (LON) London
PARIS (PAR) Paris +1
ATHENS (ATH) Athens +2