Casio 5141 User manual

Operation Guide 5141 (OC)
E-7
Charging the Watch
The face of the watch is a solar cell 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.
Best charging
x
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.
The watch may enter a sleep
x
state (page E-10) if its face is
blocked by your sleeve even
only partially.
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.
On the dashboard of a car parked in direct sunlight
x
Too close to an incandescent lampx
Under direct sunlightx
E-6
E-31 Configuring Current Time and Date Settings Manually
E-31 To change the current time setting manually
E-33 To change the current date setting manually
E-35 Using the Stopwatch
E-35 To perform elapsed time measurement
E-37 Using the Countdown Timer
E-38 To specify the countdown start time
E-38 To perform a countdown timer operation
E-39 To stop the alarm
E-40 Using the Alarm
E-40 To change the alarm time setting
E-41 To turn the alarm on or off
E-41 To stop the alarm
E-42 Auto Correction of Hand Home Positions
E-43 Adjusting Home Positions Manually
E-44 To adjust home positions manually
E-46 Troubleshooting
E-52 Specifications
E-5
Contents
E-2 About This Manual
E-3 Things to check before using the watch
E-7 Charging the Watch
E-10 To recover from the sleep state
E-11 Radio Controlled Atomic Timekeeping
E-14 To get ready for a receive operation
E-16 To perform manual receive
E-17 To check the result of the latest receive operation
E-19 Mode Reference Guide
E-20 To determine the watch’s current mode
E-20 To return to the Timekeeping Mode from any other mode
E-20 To select a mode
E-22 Timekeeping
E-22 To check the city code of the currently selected TIME
E-24 To check whether TIME 1 or TIME 2 is currently displayed
E-25 To switch from TIME 1 to TIME 2
E-26 Configuring Home City Settings
E-26 To configure Home City settings
E-29 To toggle the Home City time between standard time and daylight saving time
E-30 To manually override a time calibration standard time/daylight saving time setting
E-4
3. Set the current time.
xTo set the time using a time calibration signal
See “To get ready for a receive operation” (page E-14).
xTo set the time manually
See “Configuring Current Time and Date Settings Manually” (page E-31).
The watch is now ready for use.
For details about the watch’s radio controlled timekeeping feature, see “Radio Controlled Atomic
x
Timekeeping” (page E-11).
E-3
Things to check before using the watch
1. Push in and hold the crown for at least two seconds to enter the Timekeeping Mode, and then
observe the movement of the
x
Second Hand.
Is the
x
Second Hand moving smoothly at 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-7).
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-7).
NO
YES
YES
NEXT
2. Check the Home City and the daylight saving time (DST) settings.
Use the procedure under “To configure Home City settings” (page E-26) to configure your Home City and
daylight saving time settings.
Important!
Proper time calibration signal reception depends on correct Home City, time, and date settings in the
Timekeeping Mode. Make sure you configure these settings correctly.
E-2
About This Manual
Operations are performed using the watch’s crown, and the two buttons
indicated by the letters Aand Bin this manual.
Hand Functions
z
z Hour Hand
x
x Second Hand
c
c Minute Hand
v
v Upper Dial Hand: Indicates a time, in 24-hour format, depending on the
current mode.
b
b Lower Dial Hand: Indicates the current mode.
n
n Day
This User’s Guide uses numbers shown above to identify watch hands and
indicators.
About the crown
Some of the operations of this watch are performed by pulling out the crown,
while other operations are performed by pushing the crown in.
When pushing the crown in, make sure you push it in as far as it will go.
x
Operations may not be performed correctly if you push the crown in
incompletely.
When pulling out the crown, avoid using undue force, which creates the risk
x
of personal injury to your fingers and fingernails, and of watch malfunction.

+
6*
@>B
Pull crown out.
Push crown in.
E-1
ENGLISH
Congratulations upon your selection of this CASIO watch.
Note that the product illustrations in this manual are intended for reference only, and so the actual
x
product may appear somewhat different than depicted by an illustration.
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 this product or its malfunction.
MA1009-EA

Operation Guide 5141 (OC)
E-15
Signal reception may be difficult or even impossible under the conditions described below.x
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
What you should do next depends on whether you are using Auto Receive or Manual Receive.3.
Auto Receive: Leave the watch over night in the location you selected in step 2. See “Auto Receive”x
on page E-15 for details.
Manual Receive: Perform the operation under “To perform manual receive” on page E-16.x
Auto Receive
With Auto Receive, the watch performs the receive operation each day automatically up to six times (up
x
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.
When a calibration time is reached, the watch will perform the receive operation only if it is in the
x
Timekeeping Mode. The receive operation is not performed if a calibration time is reached while you
are configuring settings.
E-14
To get ready for a receive operation
Confirm that the watch is in the Timekeeping Mode. If it isn’t, push in and hold the crown for at least two1.
seconds to enter the Timekeeping Mode.
Place the watch in a location where signal reception is good.2.
12 o’clock
or
Position the watch as shown in the nearby illustration,x
with 12 o’clock pointed towards a window. Make sure
there are no metal objects nearby.
Signal reception normally is better at night.
x
The receive operation takes from two to seven minutes,x
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.
E-13
Even when the watch is within range of a transmitter, signal reception may be impossible due to thex
effects of geographic contours, structures, weather, the time of year, the time of day, radio interference,
etc. The signal becomes weaker at distances of approximately 500 kilometers, which means that the
influence of the conditions listed above becomes even greater.
Signal reception may not be possible at the distances noted below during certain times of the year or
x
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)−
As of June 2010, China does not use Daylight Saving Time (DST). If China does go to the Daylightx
Saving Time system in the future, some functions of this watch may no longer operate correctly.
Using this watch in a country covered by a time calibration signal that is different from the countries itx
supports may result in incorrect time indication due to local application of summer time, etc.
E-12
Approximate Reception Ranges
Japanese Signals Chinese Signal
Fukushima
500 kilometers
1,000 kilometers
Fukuoka/Saga
1,500 kilometers
Changchun500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
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-11
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-31) 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.
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!
The areas covered by
xHONOLULU (HNL) and ANCHORAGE (ANC) are quite far from the calibration
signal transmitters, so certain conditions may cause reception problems.
When
xHONOLULU (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-29) for information about how to do this.
E-10
The above times are for reference only. Actual times depend on lighting conditions.x
For details about the operating time and daily operating conditions, see the “Power Supply” section ofx
the Specifications (page E-53).
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.
There actually are two sleep state levels: “second hand sleep” and “function sleep”.
x
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) All functions, including analog timekeeping, disabled
x
Internal timekeeping maintainedx
The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is already in a sleepx
state when 6:00 AM arrives, however, it will remain in the sleep state.
The watch will not enter a sleep state while it is in the Stopwatch Modexor Countdown Timer Mode.
To recover from the sleep state
Move the watch to a well-lit area or press any button.
E-9
When power drops to Level 3, all functions will be disabled but the watch will continue to keep timex
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.
Power Recovery Mode
The watch is designed to go into a power recovery mode that stops hand operation temporarily whenever
power suddenly drops below a certain level due to overuse of the alarm tone over a short period. Note
that all operations are disabled while the watch is in the power recovery mode.
The hands will move to the correct positions and the watch will resume normal operation after power
recovers (in about 15 minutes). Putting the watch in a location where it is exposed to light will help power
to recover sooner.
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 21 hours
Window sunlight (10,000 lux) 30 minutes 5 hours 77 hours
Window sunlight on cloudy day (5,000 lux) 48 minutes 8 hours 124 hours
Indoor fluorescent lighting (500 lux) 8 hours 84 hours – – –
1 Approximate exposure each day to generate power for normal daily operation.*
2 Approximate exposure to take power up one level.*
E-8
Important!
Keep the watch in an area normally exposed to bright light when storing it for long periods. This helps
x
to ensure that power does not run down.
Storing the watch for long periods in an area where there is no light or wearing it in such a way that it is
x
blocked from exposure to light can cause power to run down. Make sure that the watch is exposed to
bright light whenever possible.
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.
If the
x
x
Second Hand is moving normally at one-second intervals, power is
at Level 1.
If the
x
x
Second Hand is moving at two-second intervals, power is at Level
2, which is quite low. Expose the watch to light as soon as possible so it
can charge.
Level Hand Movement Function Status
1 Normal. All functions enabled
2
x
x
Second Hand moves at two-second
intervals.
n
n
Day changes to 1(home position).
Beeper, time calibration signal
reception, and countdown timer
operation disabled
3
x
x
Second Hand stopped.
z
z Hour Hand and c
c
Minute Hand
stopped at 12 o’clock.
All functions disabled

+
6
@
B
Moves at two-second
intervals.

Operation Guide 5141 (OC)
E-23
About TIME 2
This watch supports two Home Cities: a main Home City (TIME 1) and a second Home City (TIME 2).
TIME 2 also can be configured with one of 29 city codes (time zones) around the world. While TIME 2 is
selected in the Timekeeping Mode, the alarm, and time calibration signal auto receive functions operate in
accordance with the TIME 2 time.
If the city code you select for TIME 2 supports time calibration signal reception (page E-11), signal
x
reception will be performed accordingly when TIME 2 is selected.
When the watch corrects the current time setting in accordance with a time calibration signal, it willx
correct both the TIME 1 and TIME 2 settings.
Support for two Home Cities allows you to do the following.x
Example: Taking a trip from Tokyo to New York (a), then from New York to London (b), and then
back to Tokyo (c)
a) While en route from Tokyo to New York
a-1. Switch the Timekeeping Mode from TIME 1 (Tokyo) to TIME 2.
See “To switch from TIME 1 to TIME 2” (page E-25).
a-2. Select the New York city code for Time 2.
See “To configure Home City settings” (page E-26).
b) En route from New York to London
Change the TIME 2 city code to London.
See “To configure Home City settings” (page E-26).
c) En route back to Tokyo from London
Switch the Timekeeping Mode from TIME 2 (London) back to TIME 1 (Tokyo).
See “To switch from TIME 1 to TIME 2” (page E-25).
E-22
Timekeeping
In the Timekeeping Mode, you can configure two different time zones (TIME 1 and TIME 2) as Home
Cities, so you can switch between them to view their current dates and times. To enter the Timekeeping
Mode from another mode, push in and hold the crown for at least two seconds.
The watch configuration used in this manual assumes that TIME 1 is configured as your main Home
x
City.
For details about using TIME 2, see “About TIME 2” (page E-23).
x
Hand Functions
z
z Hour Hand
x
x Second Hand
c
c Minute Hand
v
v Upper Dial Hand: Indicates the current hour in the Home City time in
24-hour format.
b
b Lower Dial Hand: For about one second after entering the Timekeeping
Mode, shows TIME 1 (1-TIME) or TIME 2 (TIME-2). After
that, shows the current day of the week for the selected
TIME.
n
n Day
To check the city code of the currently selected TIME
Pressing Ain the Timekeeping Mode will cause the
x
Second Hand to move to the city code of the
currently selected TIME and stay there for about one second.
For details about city codes, see the “City Code Table” at the back of this manual.
x

+
6
B
*
@>
E-21
*
Timekeeping Mode Stopwatch Mode
Alarm Mode Countdown Timer Mode
The hand indicates the day of the
week (Su, Mo, Tu, We, Th, Fr, Sa).
Hand points to ST.
Hand points to AL. Hand points to TR.
Push the crown in.
E-20
Selecting a Mode
With this watch, everything starts from the Timekeeping Mode.
To determine the watch’s current mode
Check the position of the
b
Lower Dial Hand as shown under “To select a
mode” (page E-20).
To return to the Timekeeping Mode from any other mode
Except while the watch is performing auto hand home position correction, push
in and hold the crown for at least two seconds.
To select a mode
Each push of the crown cycles through the modes in the sequence shown
below. The
b
Lower Dial Hand indicates the currently selected mode.
When pushing the crown in, make sure you push it in as far as it will go.x
Operations may not be performed correctly if you push the crown in
incompletely.
When you go from the Alarm Mode to the Timekeeping Mode, the
x
b
Lower
Dial Hand first indicates TIME 1 or TIME 2 (page E-22), and then moves to
the current day of the week.

*
E-19
Mode Reference Guide
Your watch has four “modes”. The mode you should select depends on what you want to do.
To do this: Enter this mode: See:
View the current time in your Home City and in one of 29 other citiesx
around the globe
View the current date in the Home City
x
Configure Home City and daylight saving time (DST) settingsx
Perform a time calibration receive operationx
Configure time and date settings manuallyx
Switch between the two Home Citiesx
Timekeeping Mode E-22
Use the stopwatch to measure elapsed time Stopwatch Mode E-35
Use the countdown timer Countdown Timer Mode E-37
Set an alarm time Alarm Mode E-40
E-18
Radio-controlled Atomic Timekeeping Precautions
Strong electrostatic charge can result in the wrong time setting.
x
Even if a receive operation is successful, certain conditions can cause the time setting to be off by upx
to one second.
The watch is designed to update the date and day of the week automatically for the period January
x
1, 2000 to December 31, 2099. Updating of the date by signal reception will no longer be performed
starting from January 1, 2100.
If you are in an area where signal reception is not possible, the watch keeps time with the precision
x
noted in “Specifications” (page E-52).
The receive operation is disabled under any of the following conditions.x
While power is at Level 2 or lower (page E-8)−
While the watch is in the power recovery mode (page E-9)−
While the watch is in the function sleep state (power saving, page E-10)−
While a countdown time operation is in progress (page E-37)−
A receive operation is cancelled if an alarm sounds while it is being performed.x
E-17
To check the result of the latest receive operation
In the Timekeeping Mode, press B.
The
x
x
Second Hand (short end) will move to YES (Y) for about one second
if the latest receive operation was successful, or NO (N) if it was not. After
that, regular timekeeping will resume.
You can return to the Timekeeping Mode manually by pressing
xBwhile the
x
Second Hand (short end) is pointing to YES (Y) or NO (N).
Note
The
x
x
Second Hand (short end) will indicate NO (N) if you have adjusted the
time or date setting manually since the latest receive operation.

@
E-16
To perform manual receive
In the Timekeeping Mode (page E-20), keep1. Bdepressed (for about two seconds) as the
x
Second Hand (short end) goes through the following sequence.
Moves to
xYES (or Yfor some models) or NO (N) to indicate the last signal reception result, then to
READY (R).
The2.
x
Second Hand (short end) indicates the operations the watch is currently performing.
When the x
x
Second Hand
(short end) is pointed here: It means this:
READY (R) Watch is setting up for reception.
WORK (W) Reception is in progress.
YES (Y) Reception was completed successfully.
NO (N) Reception failed for some reason.
If signal reception is unstable, thexx
x
Second Hand (short end) may move
between WORK (W) and READY (R).
When the receive operation is successful, the watch adjusts the time
x
setting accordingly, and then resumes normal timekeeping. It does not
adjust the setting if the operation failed.
Note
To interrupt a receive operation and return to the Timekeeping Mode,
x
press any button.

@
(Second hand
short end)

Operation Guide 5141 (OC)
E-31
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
In the Timekeeping Mode, pull out the crown.1.
This will cause thex
x
Second Hand to move to the city code of the
currently selected TIME (page E-22).
At this time, the short end of the
x
b
Lower Dial Hand will indicate the
Home City’s current daylight saving time setting (STD or DST).
If you do not perform any operation with the crown for about three minutes
x
after pulling it out, crown operations will become disabled and the hand
will not move if you rotate the crown. If this happens, push the crown back
in and then pull it out again.

* @
TOKYO (TYO)
E-30
Note
Selecting some city codes makes it possible for the watch to receive the time calibration signal for the
x
corresponding area automatically. See page E-11 for details.
To manually override a time calibration standard time/daylight saving time setting
Perform steps 1 and 2 under “To configure Home City settings” on page E-26.1.
Each time you select a city code, the
x
z
Hour Hand,
c
Minute Hand, and
v
Upper Dial Hand move to the current time for that city code.
Hold down2. Afor about three seconds until the short end of the
b
Lower Dial
Hand points to DST.
This is the STD/DST manual/auto switching mode.
x
Performing the above step selects manual DST switching.x
Note that you cannot switch between manual and auto switching while thex
currently selected city code of the Home City is one that does not support
time calibration signal reception.
Each press of3. Atoggles between STD and DST as shown in the illustration
to the left.
Push the crown back in to return to the Timekeeping Mode.4.
*
STD by manual setting
DST by manual setting
E-29
STD/DST Switching
STD/DST switching can be performed either automatically or manually, depending on time calibration
signal reception conditions in your area, the use of daylight saving time in your area, etc.
To configure the watch to switch between STD and DST automatically in accordance with a time−
calibration signal, see “To toggle the Home City time between standard time and daylight saving
time” (page E-29)
To override time calibration data and use a fixed STD/DST setting, see “To manually override a time
−
calibration standard time/daylight saving time setting” (page E-30).
To toggle the Home City time between standard time and daylight saving time
Perform steps 1 and 2 under “To confi
gure Home City settings” on page E-26.1.
Each time you select a city code, thex
z
Hour Hand,
c
Minute Hand, and
v
Upper Dial Hand move to the current time for that city code.
Press2. Ato toggle the time for the currently selected city code between STD
(standard time) and DST (daylight saving time).
The short end of the
x
b
Lower Dial Hand will indicate the current daylight
saving time setting as STD (standard time) or DST (daylight saving time).
When
xAUTO is enabled, the short end of the
b
Lower Dial Hand will point
to the STD side of AUTO or the DST side (depending on the current STD/
DST setting) of AUTO.
After the settings are the way you want, push the crown back in to return to3.
the Timekeeping Mode.
*
STD setting by time
calibration signal
DST setting by time
calibration signal
E-28
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time.
Remember that not all countries or even local areas use Daylight Saving Time.
The time calibration signals transmitted from Mainflingen (Germany), Anthorn (England), or Fort Collins
(the United States) include both Standard Time and DST data.
Note that an
xAUTO setting (Auto STD or Auto DST) will be indicated only if the currently selected city
code is one that supports calibration time signal reception. While AUTO is selected, the watch will
switch between STD and DST automatically in accordance with time calibration signal data.
The initial default setting is
xAUTO when any one of the following city codes is selected as the Home
City code: LONDON (LON), PARIS (PAR), ATHENS (ATH), NEW YORK (NYC), CHICAGO (CHI),
DENVER (DEN), LOS ANGELES (LAX), ANCHORAGE (ANC), or TOKYO (TYO).
For information about manually overriding the time calibration STD/DST setting, see “To manually
x
override a time calibration standard time/daylight saving time setting” (page E-30).
Note that you cannot switch betweenxSTD (standard time) and DST (daylight saving time) while UTC*
is selected as your Home City.
Coordinated Universal Time, the world-wide scientific standard of timekeeping. The reference point for*
UTC is Greenwich, England.
If you experience problems receiving the time calibration signal in your area, it probably is best to
x
switch between Standard Time and Daylight Saving Time (summer time) manually (page E-30).
E-27
Press4. Ato toggle the time for the currently selected city code between STD
(standard time) and DST (daylight saving time).
In the city code setting mode, the short end of the
x
b
Lower Dial Hand
indicates the current daylight saving time setting as STD (standard time) or
DST (daylight saving time).
Note that an
xAUTO setting (Auto STD or Auto DST) will be indicated only if
the currently selected city code is one that supports calibration time signal
reception. While AUTO is selected, the watch will switch between STD and
DST automatically in accordance with time calibration signal data.
While
xAUTO is in use, the short end of the
b
Lower Dial Hand will point to
the STD side or the DST side of AUTO, depending on the current STD/DST
setting.
The initial default setting is
xAUTO when any one of the following city
codes is selected as the Home City code: LONDON (LON), PARIS (PAR),
ATHENS (ATH), NEW YORK (NYC), CHICAGO (CHI), DENVER (DEN), LOS
ANGELES (LAX), ANCHORAGE (ANC), or TOKYO (TYO).
For details about the Daylight Saving Time setting, see “Daylight Saving
x
Time (DST)” (page E-28).
After the settings are the way you want, push the crown back in to return to5.
the Timekeeping Mode.
*
STD setting by time
calibration signal
DST setting by time
calibration signal
E-26
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
This watch does not have a city code that corresponds to Newfoundland.
x
Push in and hold the crown for at least two seconds.1.
This will enter the Timekeeping Mode (page E-21).
x
Pull out the crown.2.
This will cause the
x
x
Second Hand to move to the city code of the
currently selected TIME (page E-22).
This indicates the city code setting mode.
x
If you do not perform any operation with the crown for about threex
minutes after pulling it out, crown operations will become disabled and
the hand will not move if you rotate the crown. If this happens, push the
crown back in and then pull it out again.
For details about city codes, see the “City Code Table” at the back of
x
this manual.
Rotate the crown to move the3.
x
Second Hand to the city code you want
to assign to the currently selected TIME.
Each time you select a city code, the
x
z
Hour Hand,
c
Minute Hand,
b
Lower Dial Hand and
n
Day move to the current time and date for
that city code.

@
TOKYO (TYO)

+
6*
B
@
E-25
To switch from TIME 1 to TIME 2
In the Timekeeping Mode, hold down1. Aand keep it held down until
step 2 of this procedure is complete (about three seconds). During that
period, the watch will perform the following operations automatically.
Thex
x
Second Hand will move to the city code of the currently
selected TIME (TIME 1 or TIME 2).
Next, the
x
x
Second Hand will move to the city code of the other TIME.
After that, the time and date settings will change to those for thex
newly selected TIME.
Finally, thex
b
Lower Dial Hand will indicate the new TIME (TIME 1 or
TIME 2) selection.
You can release2. Aafter the TIME is indicated by the
b
Lower Dial
Hand.
After about one second, the
x
b
Lower Dial Hand will indicate the
current day of the week for the selected TIME.
Pressing
xAduring the one second after switching will indicate the
day of the week immediately.
To return to TIME 1 from TIME 2, hold down
xAin the Timekeeping
Mode again.

* @
TOKYO (TYO)
City code
E-24
To check whether TIME 1 or TIME 2 is currently displayed
In the Timekeeping Mode, push the crown in four times.
This will re-enter the Timekeeping Mode (page E-21).
x
Thex
b
Lower Dial Hand will indicate either TIME 1 (1-TIME) or TIME
2 (TIME-2) for about one second. After that, the
b
Lower Dial Hand
will move to the current day of the week.
When you return to the Timekeeping Mode from another mode
x
(by pushing in and holding the crown for about two seconds), the
b
Lower Dial Hand will move directly to the day of the week without
first indicating TIME 1 or TIME 2.
*
TIME 1 TIME 2

Operation Guide 5141 (OC)
E-39
PressingxBwill not perform a reset while the watch is performing any of the following operations.
While the hands are moving to the current timer time after you enter the Countdown Timer Mode.
−
While the displayed date is changing at midnight.−
Before starting a countdown timer operation, check to make sure that the countdown timer is notx
already operating (indicated by a moving
x
Second Hand). If it is, press Ato stop it and then Bto
reset to the countdown start time.
All hands move counterclockwise during a countdown. They automatically switch to clockwise
x
movement when elapsed time measurement begins after the countdown is complete. An elapsed time
measurement operation will continue until you press Ato stop it.
Pulling out the crown while a countdown or an elapsed time measurement operation is in progress will
x
stop the ongoing operation and reset to the countdown start time.
Elapsed Time Measurement Following Countdown
When the countdown reaches zero, the watch starts to count up elapsed time in one-second increments.
When the watch switches to elapsed time measurement, the hands automatically switch to clockwise
movement.
You can pause and restart an elapsed time operation by pressing
xA. While an elapsed time operation
is paused, pressing Bresets to the countdown start time.
To stop the alarm
Press any button.
Note
Pressing any button while the alarm is sounding simply stops the alarm sound. It does not stop the
x
elapsed time operation that started when the end of the countdown was reached. To stop the elapsed
time operation, press A.
E-38
To specify the countdown start time
Use the crown to enter the Countdown Timer Mode, which will move the1.
b
Lower Dial Hand to TR.
In the Countdown Timer Mode, pull out the crown. This enters the countdown2.
start time setting mode.
If you do not perform any operation with the crown for about three minutes
x
after pulling it out, crown operations will become disabled and the hand
will not move if you rotate the crown. If this happens, push the crown back
in and then pull it out again.
Rotate the crown to set the countdown start time.3.
Rotating the crown two full consecutive turns clockwise will cause the
x
c
Minute Hand to start moving clockwise. Rotating the crown another
two full consecutive turns clockwise will cause the
c
Minute Hand to start
moving at high speed. To stop hand movement, press any button or rotate
the crown one full turn counterclockwise.
The maximum countdown start time setting is 60 minutes. To set ax
countdown start time of 60 minutes, move the
c
Minute Hand to 12 o’clock.
To perform a countdown timer operation
AA B
Start Stop Reset
PressingxBwhile the Countdown Timer is stopped resets the displayed time to the start time specified
by you.

+
*
@
E-37
Using the Countdown Timer
The countdown timer can be configured within a range of one minute to 60 minutes. An alarm sounds for
about 10 seconds when the timer reaches zero, and a count up elapsed time operation starts.
Hand Functions
z
z Hour Hand: Indicates the elapsed time hour.
x
x Second Hand: Indicates countdown or elapsed seconds.
c
c Minute Hand: Indicates countdown or elapsed minutes.
v
v Upper Dial Hand: Indicates elapsed time in 24-hour format.
b
b Lower Dial Hand: Points to TR.
All hands move counterclockwise during a countdown. They automaticallyx
switch to clockwise movement when elapsed time measurement begins after
the countdown is complete.

+
*
>@ B
E-36
Note
The Stopwatch Mode can indicate elapsed time up to 1 hour, 59 minutes, 59.95 seconds.
x
The nearby display illustration shows a stopwatch reading of 20 minutes, 45.10 seconds.x
The watch’s bezel is marked in 0.05-second units.x
An ongoing stopwatch operation will continue even if you pull out the crown.x
In the following cases, the hands of the watch are moving, so pressingxBwill not perform a reset
operation.
While the hands are moving to elapsed timekeeping after you enter the Stopwatch Mode
−
While the watch is changing dates at midnight−
Once started, stopwatch timing continues until you pressxAto stop it, even if you exit the Stopwatch
Mode to another mode and even if timing reaches the stopwatch limit defined above.
You can press
xAto 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 12 o’clock.
The
x
x
Second Hand indicates the 0.05-second count for the first 30 seconds of a stopwatch elapsed
time operation. After that, the hand stops at 12 o’clock, but 0.05-second timing continues internally
after the first 30 seconds. The
x
Second Hand will jump to the current value whenever A(Stop) is
pressed.
E-35
Using the Stopwatch
The stopwatch measures elapsed time and split times.
Hand Functions
z
z Hour Hand: Indicates the stopwatch minute count
(1 revolution = 60 minutes).
x
x Second Hand: Indicates the 0.05-second count during stopwatch operation.
c
c Minute Hand: Indicates the stopwatch seconds count.
v
v Upper Dial Hand: Indicates the stopwatch minute count
(1 revolution = 120 minutes).
b
b Lower Dial Hand: Points to ST.
To perform elapsed time measurement
Use the crown to enter the Stopwatch Mode, which causes the1.
b
Lower Dial Hand to move to ST.
Now you can perform either of following stopwatch operations.2.
AAAAB
Start Stop (Restart) (Stop) Reset

* B
@+ >
E-34
Press7. B. This will enter the year setting mode.
The
x
z
Hour Hand will move to the number that represents the
tens digit of the year and the
c
Minute Hand will move to the
number that represents the ones digit. The
x
Second Hand will
move to the 12 o’clock and stop there.
Rotate the crown to adjust the year setting.8.
If you want to change the time setting at this time, press
xB
and then perform the procedure starting from step 4 under “To
change the current time setting manually” (page E-31).
After the settings are the way you want, push the crown back in to9.
return to the Timekeeping Mode.
This causes timekeeping to resume with the
x
x
Second Hand
starting from the 12 o’clock.
The day of the week indicated by the
x
b
Lower Dial Hand
changes automatically in accordance with the date (year, month,
and day).
Setting the year (tens digit)
B
00
50
10
20
3090
60
70
40
80
Note
The watch’s built-in full automatic calendar makes allowances for
x
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.
Setting the year (ones digit)
+
01
2
3
4
9
8
657
E-33
To change the current date setting manually
In the Timekeeping Mode, pull out the crown.1.
This will cause the
x
x
Second Hand to move to the city code of
the currently selected TIME (page E-22).
Hold down2. Bfor about two seconds.
The watch will beep and the
x
x
Second Hand will move to the
12 o’clock.
Press3. B. This will enter the date setting mode.
The
x
n
Day will move slightly left and right to indicate the setting
mode.
Rotate the crown to adjust the date setting.4.
After the5.
n
Day stops moving, press B. This will enter the month
setting mode.
The
x
x
Second Hand will move to the currently selected month.
This is the month setting mode.
Rotate the crown to adjust the month setting.6.
@
Dec
Nov
Feb
Mar
Apr
Oct
Sep
Aug
Jan
Jul May
Jun
Setting the month

6
@
E-32
Change the Home City and daylight saving time (DST) settings, if you want.2.
For details about these settings, see steps 2 and 3 under “To configure
x
Home City settings” (page E-26).
Hold down3. Bfor about two seconds. This will enter the time setting mode.
The watch will beep and the
x
x
Second Hand will move to the 12 o’clock.
In the following steps, each press of
xBcycles between settings as shown
below.
Home city/DST Hour/Minute Day
Year Month
Rotate the crown to adjust the time (hour and minute) setting.4.
Rotating the crown two full consecutive turns clockwise will cause thex
c
Minute Hand to start
moving clockwise. Rotating the crown another two full consecutive turns clockwise will cause the
c
Minute Hand to start moving at high speed. To stop hand movement, press any button or rotate
the crown one full turn counterclockwise.
The
x
v
Upper Dial Hand is synchronized with the
z
Hour Hand.
When adjusting the setting, check to make sure that thex
v
Upper Dial Hand correctly indicates an
a.m. time or p.m. time.
If you want to change the date setting at this time, press
xBand perform the procedure starting from
step 3 under “To change the current date setting manually” (page E-33).
After the settings are the way you want, push the crown back in to return to the Timekeeping Mode.5.
This causes timekeeping to resume with the
x
x
Second Hand starting from the 12 o’clock.

B +@>

Operation Guide 5141 (OC)
E-47
■ Hands suddenly stop moving. Button operation also is disabled.
The watch may be in the power recovery mode (page E-9). Do not perform any operation until the hands
return to their normal positions (in about 15 minutes). The hands should return to their correct positions
when normal operation returns. To help power recover, leave the watch in a location where it is exposed
to light.
■ 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
x
E-26).
Your watch supports display of the current times in one of two different Home Time zones named TIME
x
1 and TIME 2. Check to make sure that your watch is displaying the Home Time zone you want (page
E-22).
■ 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
x
configure Home City settings” (page E-26).
The watch’s STD (standard time)/DST (daylight saving time) setting can be configured for autox
switching in accordance with a time calibration signal. You also can manually override the STD/DST
setting configured by the calibration signal. If you use manual override to select a setting, timekeeping
will be off by one hour following an STD/DST switching data in your area, even if the watch is receiving
a time calibration signal. Select the correct STD (standard time)/DST (daylight saving time) setting to
suit your current location (page E-28).
If you are using in the watch in an area where time calibration signal reception is not possible, you may
x
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-29) to change the STD/DST setting.
E-46
Troubleshooting
Hand Movement and Position
■ I lost track of what mode the watch is in.
Refer to “To select a mode” (page E-20). To return directly to the Timekeeping Mode from any other
mode, push in and hold the crown for at least two seconds.
■ When pressing in the crown to enter the Stopwatch Mode from the Timekeeping Mode, the
crown needs to be held down longer than when switching to another mode.
The watch is designed this way in order to ensure that the Timekeeping Mode is not exited unintentionally
due to accidental pressing of the crown. When entering the Stopwatch Mode from the Timekeeping Mode,
push in the crown as far as it will go and hold it down until the mode changes.
■ 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-8).
■ 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.
The watch is recovering from a sleep state (page E-10).x
The time setting is being adjusted following a successful auto time calibration signal receive operationx
(page E-11).
The watch is returning to the Timekeeping Mode automatically from the Alarm Mode (page E-40).x
E-45
Press4. B.
This enters thex
n
Day home position adjustment mode.
Check the5.
n
Day to confirm that it is 1, which is its home position.
If thex
n
Day is not 1, rotate the crown until it is.
Rotating the crown two full consecutive turns clockwise will cause thex
n
Day to start changing in a forward direction (increment). If you want the
n
Day to change in a reverse direction (decrement), rotate the crown two
full turns counterclockwise.
To stop
x
n
Day movement, press any button.
Push the crown back in to return to the Timekeeping Mode.6.
This will cause the hands to return to their normal positions and resume
x
normal timekeeping. Wait until everything stops moving before performing
any other operation.

6
E-44
To adjust home positions manually
Push in and hold the crown for at least two seconds to enter the Timekeeping1.
Mode.
Pull out the crown.2.
Hold down3. Bfor about seven seconds. This will cause the watch to beep
twice and then the
x
Second Hand will perform one full revolution.
Though the
x
x
Second Hand will stop momentarily about two seconds after
you hold down B, do not release the button yet. Wait until the
x
Second
Hand completes a full revolution before you release B.
This operation will enter the home position adjustment mode and cause
x
all of the watch’s hands (but not the
n
Day) to move automatically to their
home positions.
Home position adjustment is complete when all hands are at their
x
12 o’clock positions.
If thex
v
Upper Dial Hand is not pointing at 24, which is its home position,
hold down Afor about two seconds to move it there.
To exit the home position adjustment operation and return to the
x
Timekeeping Mode, push the crown back in.

6
@>
E-43
Adjusting Home Positions Manually
Strong magnetism or impact can cause the hands and/or day 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.
Hand home position adjustment is not required if the time and day settings are correct.
x
Note
Any time after you enter the home position adjustment mode in step 2 of the following procedure, you
x
can return to the Timekeeping Mode by pushing the crown back in. In either case, any adjustments you
made before the watch returned to the Timekeeping Mode will be applied.
If you do not perform any operation with the crown for about three minutes after pulling it out, crown
x
operations will become disabled and hands will not move if you rotate the crown. If this happens, push
the crown back in and then pull it out again.
E-42
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 corrects the hand position
automatically.
Auto correction is performed in the Timekeeping Mode only.
x
Auto correction corrects the positions of all hands. For thex
n
Day, you must perform the manual
adjustment procedure under “Adjusting Home Positions Manually” (page E-43).
If the
x
v
Upper Dial Hand is 12 hours off of the current correct time, correct the setting using the
procedure under “Adjusting Home Positions Manually” (page E-43).
Auto correction of the
x
b
Lower Dial Hand is performed once a day in the middle of the night, while the
watch is in the sleep state.
Auto correction of hand home positions can take up to three and a half minutes to complete.
x
E-41
Rotate the crown to set the alarm time.3.
Rotating the crown two full consecutive turns clockwise will cause the
x
c
Minute Hand to start
moving clockwise. Rotating the crown another two full consecutive turns clockwise will cause the
c
Minute Hand to start moving at high speed. To stop hand movement, press any button or rotate
the crown one full turn counterclockwise.
Push the crown back in to exit the alarm setting mode.4.
The alarm always works based on the time kept in the Timekeeping Mode.x
The watch will return to the Timekeeping Mode automatically if you do not perform any operation inx
the Alarm Mode for about two or three minutes.
To turn the alarm on or off
In the Alarm Mode, press Ato toggle the alarm between on and off. The
x
Second Hand (short end) will
indicate the current ON/OFF setting.
To stop the alarm
Press any button.
E-40
Using the Alarm
When the alarm is turned on, an alarm will sound for about 10 seconds each day when the time in the
Timekeeping Mode (TIME 1 or TIME 2) (page E-22) reaches the preset alarm time. This is true even if the
watch is not in the Timekeeping Mode.
Hand Functions
z
z Hour Hand: Indicates the currently set alarm time hour.
x
x Second Hand: Short end indicates the current alarm ON/OFF setting.
c
c Minute Hand: Indicates the currently set alarm time minute.
v
v Upper Dial Hand: Indicates the currently set alarm time in 24-hour format.
b
b Lower Dial Hand: Points to AL.
To change the alarm time setting
Use the crown to enter the Alarm Mode, which will move the1.
b
Lower Dial Hand to AL.
In the Alarm Mode, pull out the crown to enter the alarm setting mode.2.
If you do not perform any operation with the crown for about three minutes after pulling it out, crownx
operations will become disabled and the hand will not move if you rotate the crown. If this happens,
push the crown back in and then pull it out again.

>@
*B
+

Operation Guide 5141 (OC)
L-1
City Code Table
City Code City
UTC Offset/
GMT Differential
PAGO PAGO (PPG) Pago Pago –11
HONOLULU (HNL) Honolulu –10
ANCHORAGE (ANC) Anchorage –9
LOS ANGELES (LAX) Los Angeles –8
DENVER (DEN) Denver –7
CHICAGO (CHI) Chicago –6
NEW YORK (NYC) 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
City Code City
UTC Offset/
GMT Differential
JEDDAH (JED) 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 (DAC) 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
xBased on data as of July 2010.
xThe rules governing global times (UTC offset and GMT differential) and summer time are determined
by each individual country.
E-53
Other: Power Saving; Auto Correction of Hand Home Positions
Power Supply: Solar cell 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)
E-52
Specifications
Accuracy at normal temperature: ± 15 seconds a month (with no signal calibration)
Timekeeping (World time): 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; Dual Home City times (TIME 1 and
TIME 2)
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)
Stopwatch: Measuring capacity: 1:59'59.95"
Measuring unit: 0.05 seconds
Measuring mode: Elapsed time
Countdown Timer:
Measuring unit: 1 second
Input range: 1 to 60 minutes (1-minute increments)
Other: Elapsed time
Alarm: Daily alarm
E-51
■ 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-11
E-26
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-43
E-50
■ 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) 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-14
If you are unable to receive the time calibration
signal, change the STD (standard time)/DST
(daylight saving) setting manually.
E-28
■ Auto Receive is not performed or I cannot perform Manual Receive.
Possible Cause Remedy Page
The watch is in the Stopwatch Mode or Countdown
Timer Mode.
Auto Receive is not performed while the watch is
in the Stopwatch Mode or Countdown Timer Mode.
Push in and hold the crown for at least two seconds
to enter the Timekeeping Mode.
E-20
Your Home City setting is wrong. Check your Home City setting and correct it, if
necessary.
E-11
E-26
A countdown timer operation is in progress.
Both Auto Receive and Manual Receive are
impossible while a countdown is in progress. In the
Countdown Timer Mode, stop the timer operation
and then return to the Timekeeping Mode.
E-37
There is not enough power for signal reception. Expose the watch to light to charge it. E-7
E-49
■ The
x
Second Hand (short end) indicates NO (N) when I check the result of the latest receive
operation.
Possible Cause Remedy Page
You are wearing or moving the watch, orx
performing a button operation during the signal
receive operation.
The watch is in an area with poor receptionx
conditions.
Keep the watch in an area where reception
conditions are good while the signal receive
operation is being performed.
E-14
You are in an area where signal reception is not
possible for some reason. See “Approximate Reception Ranges”. E-12
The calibration signal is not being transmitted for
some reason.
Check the website of the organization thatx
maintains the time calibration signal in your area
for information about its down times.
Try again later.x
—
■ 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-15), 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-26).
E-48
■ 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-42).
TIME 1 and TIME 2
The TIME 1 time is correct, but the TIME 2 time is off.■
The STD (standard time)/DST (daylight saving time) setting of TIME 2 may be wrong. Select the correct
STD (standard time)/DST (daylight saving time) setting (page E-28).
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-8). Continue exposing the watch to light
until the
x
Second Hand starts moving normally (at one-second intervals).
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 as the Home City. You need to
adjust the current time manually when any other city is selected as the Home City.