MA1111-EA
Operation Guide 5231
ENGLISH
Congratulations upon your selection of this CASIO watch.
E-1
About This Manual
x Depending on the model of your watch, display text
appears either as dark figures on a light background,
or light figures on a dark background. All examples
in this manual are shown using dark figures on a light
background.
x Button operations are indicated using the letters shown
in the illustration.
x Note that the product illustrations in this manual are
intended for reference only, and so the actual product
may appear somewhat different than depicted by an
illustration.
E-2
E-3
Things to check before using the watch
1. Check the battery power level.
The watch is charged.
YES
NO
Is H or M indicated as the battery power indicator (page E-15)?
For details about charging, see “Charging the Watch” (page E-11).
NEXT
Go to step 2.
Battery power
indicator
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-11).
E-4
E-5
E-7
E-9
2. Check the Home City and the daylight saving time (DST) setting.
Contents
Use the procedure under “To configure Home City settings” (page E-26) to
configure your Home City and daylight saving time settings.
E-2 About This Manual
E-4 Things to check before using the watch
Important!
E-11 Charging the Watch
Proper World Time Mode data depends on correct Home City, time, and date
settings in the Timekeeping Mode. Make sure you configure these settings
correctly.
E-20 To recover from the sleep state
E-21 Mode Reference Guide
E-25 Timekeeping
3. Set the current time.
x To set the time
See “Configuring Current Time and Date Settings” (page E-31).
E-26 Configuring Home City Settings
E-26 To configure Home City settings
E-29 To change the Daylight Saving Time (summer time) setting
The watch is now ready for use.
E-31 Configuring Current Time and Date Settings
E-31 To change the current time and date settings
E-6
E-36 Using the World Time Mode
E-45 Using the Alarm
E-36 To enter the World Time Mode
E-45 To enter the Alarm Mode
E-46 To set an alarm time
E-47 To test the alarm
E-48 To turn an alarm and the Hourly Time Signal on and off
E-48 To stop the alarm
E-36 To view the time in another time zone
E-37 To specify standard time or daylight saving time (DST) for a city
E-38 To swap your Home Time and World Time Cities
E-39 Using the Stopwatch
E-39 To enter the Stopwatch Mode
E-40 To perform an elapsed time operation
E-40 To pause at a split time
E-50 Illumination
E-50 To turn on illumination manually
E-51 To change the illumination duration
E-54 To turn the auto light switch on and off
E-40 To measure two finishes
E-42 Using the Countdown Timer
E-42 To enter the Countdown Timer Mode
E-42 To specify the countdown start time
E-44 To perform a countdown timer operation
E-44 To stop the alarm
E-57 Hand Home Position Adjustment
E-57 To adjust home positions manually
E-60 Moving the Hands for Easy Viewing of the Digital Dials
E-61 To move the hands to view a digital dial
E-62 To return the hands to their normal positions
E-8
Operation Guide 5231
x The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch
Mode Reference Guide
Your watch has “five modes”. The mode you should select depends on what you
want to do.
is already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep
state.
x The watch will not enter a sleep state while it is in the Stopwatch Mode or
Countdown Timer Mode.
To do this:
Enter this mode:
See:
x View the current date in the Home City
x Configure Home City and daylight saving time (DST)
settings
To recover from the sleep state
Move the watch to a well-lit area or press any button.
Timekeeping Mode
E-25
x Configure time and date settings
x Switch between 12-hour and 24-hour timekeeping
x Display an alarm countdown
View the current time in one of 48 cities (31 time zones)
around the globe
World Time Mode
Stopwatch Mode
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E-39
Use the stopwatch to measure elapsed time
Use the countdown timer
Countdown Timer Mode E-42
Alarm Mode E-45
Set an alarm time
E-20
E-21
Selecting a Mode
x The illustration below shows which buttons you need to press to navigate between
modes.
x To return to the Timekeeping Mode from any other mode, hold down C for at
least four seconds.
Timekeeping Mode
World Time Mode
Stopwatch Mode
Countdown Timer Mode
Alarm Mode
C
C
C
C
C
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E-23
General Functions (All Modes)
The functions and operations described in this section can be used in all of the
modes.
Timekeeping
Use the Timekeeping Mode to set and view the current
time and date.
x If you have an alarm time set, the right digital dial will
change to show a countdown of the final 60 minutes
until the alarm time is reached.
x When viewing a digital dial, you can move the analog
hands for an unobstructed view.
Minutes
Auto Return Features
Hour
x The watch returns to the Timekeeping Mode automatically if you do not perform
any button operation for two or three minutes in the Alarm Mode.
x If you leave the watch in a setting mode (with flashing digits) for two or three
minutes without performing any operation, the watch will exit the setting mode
automatically.
x Press A to toggle the left digital dial between month/
day and hour/minutes.
Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when
A
you last exited the mode appears first.
Day of week
Scrolling
Seconds
Month Day
The B and D buttons are used in the setting mode to scroll through data. In most
cases, holding down these buttons during a scroll operation scrolls through the
data at high speed.
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E-25
2. Use D (East) and B (West) to scroll through the city
codes in the right digital dial until the one you want to
use as your Home City is displayed.
DST indicator
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).
3. Press C so the DST indicator is flashing in the left
digital dial, which indicates the DST setting mode.
To configure Home City settings
City code
1. In the Timekeeping Mode, hold down A for about
two seconds until ADJ appears in the right digital dial.
When you release A, the city code and city name will
scroll across the right digital dial. This is the setting
mode.
4. Press D to toggle the DST setting between Daylight
Saving Time (ON) and Standard Time (OFF) in the right
digital dial.
x Note that you cannot switch between standard time
and daylight saving time (DST) while UTC is selected
as your Home City.
x The watch will exit the setting mode automatically if
you do not perform any operation for about two or
three minutes.
x For details about city codes, see the “City Code Table” at the back of this
manual.
x Whenever you enter a setting mode, the analog hands will automatically move to
positions that allow easier viewing of the digital dials.
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E-27
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A for about
5. After the setting is the way you want, press A to return to the Timekeeping
Mode.
DST indicator
x The DST indicator appears to indicate that Daylight Saving Time is turned on.
x Exiting a setting mode will normally cause the hands to return to regular
timekeeping automatically. However, if you manually move the hands (page
E-61) and then enter a setting mode, they will not return to regular timekeeping
automatically when you exit the setting mode. In this case, you will need to
return the hands to their normal positions manually (page E-62).
two seconds until ADJ appears in the right digital dial.
When you release A, the city code and city name will
scroll across the right digital dial. This is the setting
mode.
x Whenever you enter a setting mode, the analog hands
will automatically move to positions that allow easier
viewing of the digital dials. This is the setting mode.
Note
2. Press C to enter the DST setting mode.
x After 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.
* Coordinated Universal Time, the world-wide scientific standard of timekeeping.
The reference point for UTC is Greenwich, England.
3. Press D to toggle the DST setting between Daylight
Saving Time (ON) and Standard Time (OFF).
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E-29
Operation Guide 5231
4. After the setting is the way you want, press A to return to the Timekeeping
Configuring Current Time and Date Settings
You can configure current time and date settings.
Mode.
x The DST indicator appears to indicate that Daylight Saving Time is turned on.
x Exiting a setting mode will normally cause the hands to return to regular
timekeeping automatically. However, if you manually move the hands (page
E-61) and then enter a setting mode, they will not return to regular timekeeping
automatically when you exit the setting mode. In this case, you will need to
return the hands to their normal positions manually (page E-62).
To change the current time and date settings
1. In the Timekeeping Mode, hold down A for about two
City code
seconds until ADJ appears in the right digital dial.
When you release A, the city code and city name will
scroll across the right digital dial. This is the setting
mode.
x Whenever you enter a setting mode, the analog hands
will automatically move to positions that allow easier
viewing of the digital dials.
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E-31
2. Press C to move the flashing in the sequence shown below to select the other
settings.
3. When the timekeeping setting you want to change is flashing, use D and/or B
to change it as described below.
C
C
C
C
Screen
To do this:
Change the city code
Do this:
City Code
C
DST
12/24-Hour Format
Seconds
Hour
Use D (East) and B (West).
Toggle between Daylight Saving Time (ON)
and Standard Time (OFF)
C
Toggle between 12-hour (12H) and
24-hour (24H) timekeeping
Press D.
Power Saving
C
Minute
C
Reset the seconds to 00
Change the hour or minute
Illumination
Duration
Button Operation
Tone On/Off
Day
Month
Year
Use D (+) and B (–).
C
C
C
C
Change the year, month, or day
Toggle between button operation tone on
(KEY ) and off (MUTE)
x The following steps explain how to configure timekeeping settings only.
Press D.
Toggle the illumination duration between
three seconds (LT3) and 1.5 seconds (LT1)
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E-33
4. Press A to exit the setting mode.
x The watch automatically adjusts its analog setting to match the current time
displayed in the left digital dial.
x Exiting a setting mode will normally cause the hands to return to regular
timekeeping automatically. However, if you manually move the hands (page
E-61) and then enter a setting mode, they will not return to regular timekeeping
automatically when you exit the setting mode. In this case, you will need to
return the hands to their normal positions manually (page E-62).
x The 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 5 (page E-15).
x The day of the week changes automatically when the date changes.
x Refer to the pages shown below for more information on Timekeeping Mode
settings.
− Button operation tone on/off: “To turn the button operation tone on and off”
(page E-63)
− Enabling and disabling power saving: “To turn Power Saving on and off” (page
E-65)
− The illumination duration: “To change the illumination duration” (page E-51)
Note
x For information about selecting a Home City and configuring the DST setting, see
“Configuring Home City Settings” (page E-26).
x While 12-hour format is selected for timekeeping, a PM indicator will appear for
times from noon to 11:59 p.m. No indicator appears for times from midnight to
11:59 a.m. With 24-hour format, time is displayed from 0:00 to 23:59, without any
PM indicator.
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E-35
To specify standard time or daylight saving time (DST) for a city
1. In the World Time Mode, use D (East) and B (West)
Using the World Time Mode
DST indicator
You can use the World Time Mode to view the current
to scroll through the city codes in the right digital dial
until the one whose Standard Time/Daylight Saving
Time setting you want to change is displayed.
Currently selected
World Time City
time in one of 31 time zones (48 cities) around the globe.
The city that is currently selected in the World Time Mode
is called the “World Time City”.
2. Hold down A for about two seconds until the watch
beeps.
To enter the World Time Mode
x This toggles the city code you selected in step 1
between Daylight Saving Time (DST indicator
displayed in the left digital dial) and standard time
(DST indicator not displayed).
Use C to select the World Time Mode as shown on
page E-22.
x The right digital dial will show WT for about one second.
After that, the city code and city name will scroll once
across the right digital dial, and then the three-letter
x Using the World Time Mode to change the DST setting of the city code that is
selected as your Home City also will change the Timekeeping Mode time DST
setting.
x Note that you cannot switch between standard time/daylight saving time (DST)
while UTC is selected as the World Time City.
Current time in the
corresponding city code will be displayed.
currently selected World
Time City
To view the time in another time zone
In the World Time Mode, use D (East) to scroll through
city codes.
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E-37
x The standard time/daylight saving time (DST) setting affects only the currently
selected time zone. Other time zones are not affected.
Using the Stopwatch
The stopwatch measures elapsed time, split times, and two finishes.
To swap your Home Time and World Time Cities
1. In the World Time Mode, use D to select the city you want to use as your new
Home City.
Minutes Seconds
To enter the Stopwatch Mode
Use C to select the Stopwatch Mode (STW) as shown
on page E-23.
2. To swap, hold down A and B at the same time until the watch beeps.
A and B
1/100 second
x This will make the World Time City you selected in step 1 (NYC (New York)) your
new Home City.
x Your previous Home City (TYO (Tokyo)) will be your new World Time City.
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E-39
Operation Guide 5231
To perform an elapsed time operation
Note
x The Stopwatch Mode can indicate elapsed time up to 59 minutes, 59.99 seconds.
x Once started, stopwatch timing continues until you press D to stop it, even if
you exit the Stopwatch Mode to another mode and even if timing reaches the
stopwatch limit defined above.
x Exiting the Stopwatch Mode while a split time is frozen on the display clears the
split time and returns to elapsed time measurement.
D
D
D
D
A
Start
Stop
(Restart)
(Stop)
Reset
To pause at a split time
D
A
A
D
A
Start
Split
(SPL displayed)
Split release
Stop
Reset
To measure two finishes
D
A
D
A
A
Start
Split
Stop
Split release
Display time of
second runner.
Reset
(SPL displayed)
Second runner
First runner finishes. finishes.
Display time of first
runner.
E-40
E-41
2. Hold down A until the minute setting of the current countdown start time starts
to flash. This is the setting mode.
x Whenever you enter a setting mode, the analog hands will automatically move to
positions that allow easier viewing of the digital dials.
Using the Countdown Timer
The countdown timer can be set within a range of one minute to 100 minutes. An
alarm sounds when the countdown reaches zero.
3. Press C to move the flashing between the minute and second settings.
To enter the Countdown Timer Mode
Use C to select the Countdown Timer Mode (TMR) as
shown on page E-23.
Countdown time
(Minutes, seconds)
4. Use D (+) and B (–) to change the flashing item.
x To set the starting value of the countdown time to 100 minutes, set 00'00".
5. Press A to exit the setting mode.
To specify the countdown start time
1. Enter the Countdown Timer Mode.
x If a countdown is in progress (indicated by the
seconds counting down in the left digital dial), press
D to stop it and then press A to reset to the current
countdown start time.
x Exiting a setting mode will normally cause the hands to return to regular
timekeeping automatically. However, if you manually move the hands (page
E-61) and then enter a setting mode, they will not return to regular timekeeping
automatically when you exit the setting mode. In this case, you will need to
return the hands to their normal positions manually (page E-62).
x If a countdown is paused, press A to reset to the
current countdown start time.
E-42
E-43
To perform a countdown timer operation
Using the Alarm
D
D
D
D
A
You can set five independent daily alarms. When a daily
Alarm number
Start
Stop
(Restart)
(Stop)
Reset
alarm is turned on, an alarm tone will sound for about
10 seconds each day when the time in the Timekeeping
Mode reaches the preset alarm time. This is true even if
the watch is not in the Timekeeping Mode.
You can also turn on an Hourly Time Signal, which will
cause the watch to beep twice every hour on the hour.
x Before starting a countdown timer operation, check to make sure that a
countdown operation is not in progress (indicated by the seconds counting down).
If it is, press D to stop it and then A to reset to the countdown start time.
x An alarm sounds for 10 seconds when the end of the countdown is reached. This
alarm will sound in all modes. The countdown time is reset to its starting value
automatically when the alarm sounds.
To enter the Alarm Mode
Use C to select the Alarm Mode as shown on page
To stop the alarm
Press any button.
Alarm time (Hour : Minutes)
E-23.
x The right digital dial will show ALM for about one
second and then the indictor for the currently selected
alarm (AL1 through AL5, or SIG) will appear.
x When you enter the Alarm Mode, the data you were
viewing when you last exited the mode appears first.
E-44
E-45
To set an alarm time
4. While a setting is flashing, use D (+) and B (–) to change it.
x When setting the alarm time using the 12-hour format, take care to set the time
correctly as a.m. (no indicator) or p.m. (PM indicator).
1. In the Alarm Mode, use D to scroll through the alarm
Alarm ON/OFF indicator
indicators (AL1 to AL5, SIG) in the right digital dial until
the one whose time you want to set is displayed.
5. Press A to exit the setting mode.
x Exiting a setting mode will normally cause the hands to return to regular
timekeeping automatically. However, if you manually move the hands (page
E-61) and then enter a setting mode, they will not return to regular timekeeping
automatically when you exit the setting mode. In this case, you will need to
return the hands to their normal positions manually (page E-62).
D
D
D
D
D
AL1
AL2
AL3
AL4
AL5
SIG
D
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
2. Hold down A for about two seconds until the alarm time starts to flash. This is
the setting mode.
x Whenever you enter the setting mode, the analog hands will automatically move
to positions that allow easier viewing of the digital dials.
3. Press C to move the flashing between the hour and minute settings.
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E-47
To turn an alarm and the Hourly Time Signal on and off
Alarm Countdown
1. In the Alarm Mode, use D to scroll through the alarm
indicators (AL1 to AL5, SIG) in the right digital dial until
When the current time reaches one hour before an alarm
Hourly Time Signal
on indicator
Alarm Countdown
time setting, the alarm on/off indicator (in the lower digital
dial) will flash and a countdown of the final 60 minutes
will be displayed in the right digital dial while the watch is
in the Timekeeping Mode.
the one you want is displayed.
2. When the alarm or the Hourly Time Signal you want is
selected, press A to toggle it between on and off.
x The alarm on indicator (when any alarm is on) and the
Hourly Time Signal on indicator (when the Hourly Time
Signal is on) are displayed in all modes.
Note
x Pressing A while an alarm countdown is in progress
will display the day of the week in the right digital dial
for about two seconds. After that, the dial will return to
Alarm ON/OFF indicator
the countdown.
To stop the alarm
Press any button.
x When you enter the Timekeeping Mode from another mode while an alarm
countdown is in progress, the day of the week will appear in the right digital dial for
two seconds. After that, the countdown will appear.
x If an alarm countdown for another alarm starts while a previous alarm countdown is
already in progress, it will be displayed after the ongoing countdown reaches zero
and its alarm sounds.
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Operation Guide 5231
x The above operation turns on illumination regardless of the current auto light switch
setting.
Illumination
The face of the watch is illuminated for easy reading in
To change the illumination duration
1. In the Timekeeping Mode, hold down A for about two seconds until ADJ
appears in the right digital dial.
When you release A, the city code and city name will scroll across the right
digital dial. This is the setting mode.
x Whenever you enter a setting mode, the analog hands will automatically move to
positions that allow easier viewing of the digital dials.
the dark.
The watch’s auto light switch turns on illumination
automatically when you angle the watch towards your
face.
x The auto light switch must be turned on (page E-54) for
it to operate.
To turn on illumination manually
2. Use C to cycle through the settings in the right digital dial until the current
illumination duration (LT1 or LT3) is shown.
x See the sequence in step 2 of the procedure under “To change the current
time and date settings” (page E-31) for information about how to scroll through
setting mode.
Press B in any mode to illuminate the face of the watch.
x You can use the procedure below to select either
1.5 seconds or three seconds as the illumination
duration. When you press B, the face will remain
illuminated for about 1.5 seconds or three seconds,
depending on the current illumination duration setting.
3. Press D to toggle the illumination duration between three seconds (LT3
displayed) and 1.5 seconds (LT1 displayed).
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E-51
Warning!
4. After all of the settings are the way you want, press A to exit the setting mode.
x Exiting a setting mode will normally cause the hands to return to regular
timekeeping automatically. However, if you manually move the hands (page
E-61) and then enter a setting mode, they will not return to regular timekeeping
automatically when you exit the setting mode. In this case, you will need to
return the hands to their normal positions manually (page E-62).
x Always make sure you are in a safe place whenever you are reading the
face of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or
injury. Also take care that sudden illumination by the auto light switch does
not startle or distract others around you.
x When you are wearing the watch, make sure that its auto light switch is
turned off before riding on a bicycle or operating a motorcycle or any other
motor vehicle. Sudden and unintended operation of the auto light switch
can create a distraction, which can result in a traffic accident and serious
personal injury.
About the Auto Light Switch
Turning on the auto light switch causes illumination
to turn on, whenever you position your wrist as
More than
described below in any mode.
40°
Moving the watch to a position that is parallel to
the ground and then tilting it towards you more
than 40 degrees causes illumination to turn on.
Note
Wear the watch on the
outside of your wrist
x This watch features a “LED”, so the auto light switch operates only when available
light is below a certain level. It does not illuminate the face under bright light.
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E-53
Auto light switch precautions
To turn the auto light switch on and off
x Wearing the watch on the inside of your wrist, movement of your arm, or vibration
of your arm can cause frequent activation of the auto light switch and illumination
of the face. To avoid running down the battery, turn off the auto light switch
whenever engaging in activities that might cause frequent illumination of the face.
x Note that wearing the watch under your sleeve while the auto light switch is turned
on can cause frequent illumination of the face and can run down the battery.
In the Timekeeping Mode, hold down B for about
three seconds to toggle the auto light switch on
(indicator displayed in the right digital dial) and off
(indicator not displayed).
x The auto light switch on indicator appears in all
modes while the auto light switch is turned on.
x The auto light switch turns off automatically whenever
battery power drops to Level 4 (page E-15).
x Illumination may not turn on if the face of the watch is more than
15 degrees above or below parallel. Make sure that the back of
your hand is parallel to the ground.
Auto light switch on indicator
x Illumination turns off after the preset illumination duration (page
E-51), even if you keep the watch pointed towards your face.
x Static electricity or magnetic force can interfere with proper
operation of the auto light switch. If illumination does not turn on,
try moving the watch back to the starting position (parallel with the
ground) and then tilt it back towards your face again. If this does
not work, drop your arm all the way down so it hangs at your side,
and then bring it back up again.
Illumination Precautions
x LED panel that provides illumination loses power after very long use.
x Illumination may be hard to see when viewed under direct sunlight.
x Illumination turns off automatically whenever an alarm sounds.
x Frequent use of illumination runs down the battery.
E-54
E-55
x You may notice a very faint clicking sound coming from the watch when it is
shaken back and forth. This sound is caused by mechanical operation of the auto
light switch, and does not indicate a problem with the watch.
Hand Home Position Adjustment
Strong magnetism or impact can cause the hands of the watch to be off.
x Home position adjustment is not necessary when the analog time and digital time
are the same time in the Timekeeping Mode.
To adjust home positions manually
1. In the Timekeeping Mode, hold down A and keep it depressed for about five
seconds until H.SET appears in the right digital dial.
x The hour and minute hands should all move to 12 o’clock, which is their home
position.
x Though ADJ will appear in the right digital dial about two seconds after you hold
down A, do not release the button yet. Keep it depressed until H.SET appears.
When H.SET appears in the right digital dial, release the A button. This will
cause the hour and minute hands to move to 12 o’clock.
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E-57
Note
x The watch will return to regular timekeeping automatically if you do not perform
any operation for about two or three minutes. Any changes you have made to
settings up to that point will be saved.
After performing home position adjustment, enter the Timekeeping Mode and check
to make sure that the analog hands and the digital dial indicate the same time. If
they do not, perform home position adjustment again.
If the hour and minute hands are all at 12 o’clock, which is their home position,
jump to step 3.
2. Use D (+) and B (–) to adjust the hour and minute hand positions.
x Holding down either button will cause the hand to move at high speed. Once
started, high-speed hand movement will continue even if you release the button.
To stop high-speed hand movement, press any button.
x High-speed hand movement started with the D (+) button will stop
automatically after 12 revolutions of the minute hand. If started with the B (–)
button, it will stop after one revolution of the minute hand.
3. Press A to exit home position correction and return to regular timekeeping.
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Operation Guide 5231
To move the hands to view a digital dial
Moving the Hands for Easy Viewing of the Digital Dials
You can use the procedure below to move the analog hands in order to better view
a digital dial.
Hold down C for about two seconds until HAND appears.
Releasing C will cause the HANDS indicator to flash and the hands will move away
from the digital dial.
Note
x The analog hands will not move while battery power is low.
Hold down C.
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E-61
To return the hands to their normal positions
Hold down C for about two seconds until HAND appears.
Other Settings
The button operation tone sounds any time you press one of the watch’s buttons.
You can turn the button operation tone on or off as desired.
Note
x The hands will also return to their normal positions if you do not perform any
operation for about one hour.
x Even if you turn off the button operation tone, the alarm, Hourly Time Signal, and
Countdown Timer Mode alarm all operate normally.
x The hands also will move away from the digital dial automatically whenever you
enter a setting mode in the Timekeeping Mode, Timer Mode, or Alarm Mode.
x Hold down C for about four seconds to return the hands to their normal positions
and switch to the Timekeeping Mode.
To turn the button operation tone on and off
1. In the Timekeeping Mode, hold down A for about two
seconds until ADJ appears in the right digital dial.
When you release A, the city code and city name will
scroll across the right digital dial. This is the setting
mode.
x Whenever you enter a setting mode, the analog hands
will automatically move to positions that allow easier
viewing of the digital dials.
Mute indicator
E-62
E-63
To turn Power Saving on and off
2. Use C to cycle through settings in the right digital dial until the current button
operation tone (MUTE or KEY ) is displayed.
x See the sequence in step 2 of the procedure under “To change the current
time and date settings” (page E-31) for information about how to scroll between
settings.
1. In the Timekeeping Mode, hold down A for about two
Power saving on indicator
seconds until ADJ appears in the right digital dial.
When you release A, the city code and city name will
scroll across the right digital dial. This is the setting
mode.
3. Press D to toggle the button operation tone on (KEY ) and off (MUTE).
x Whenever you enter a setting mode, the analog hands
will automatically move to positions that allow easier
viewing of the digital dials.
4. After all of the settings are the way you want, press A to exit the setting mode.
x Exiting a setting mode will normally cause the hands to return to regular
timekeeping automatically. However, if you manually move the hands (page
E-61) and then enter a setting mode, they will not return to regular timekeeping
automatically when you exit the setting mode. In this case, you will need to
return the hands to their normal positions manually (page E-62).
2. Use C to cycle through the settings in the right digital dial unit the current power
saving setting (PSON or PSOF) is displayed.
x See the sequence in step 2 of the procedure under “To change the current
time and date settings” (page E-31) for information about how to scroll between
settings.
Note
x The mute indicator is displayed in all modes when the button operation tone is
turned off.
3. Press D to toggle Power Saving on (PSON) and off (PSOF).
E-64
E-65
4. After all of settings are the way you want, press A to exit the setting mode.
x Exiting a setting mode will normally cause the hands to return to regular
timekeeping automatically. However, if you manually move the hands (page
E-61) and then enter a setting mode, they will not return to regular timekeeping
automatically when you exit the setting mode. In this case, you will need to
return the hands to their normal positions manually (page E-62).
Troubleshooting
Time Setting
■ The current time setting is off by hours.
Your Home City setting may be wrong (page E-26). Check your Home City setting
and correct it, if necessary.
■ The current time setting is off by one hour.
You may need to change your Home City’s standard time/daylight saving time
(DST) setting. Use the procedure under “To change the current time and date
settings” (page E-31) to change the standard time/daylight saving time (DST)
setting.
■ The hands are off.
This could indicate that the watch has been exposed to magnetism or strong
impact, which has caused problems with proper hand alignment. Adjust the watch’s
hand home position alignment (page E-57).
E-66
E-67
■ The analog hands are not indicating the correct time.
Specifications
If the HANDS indicator is displayed on the right digital dial, it means that the analog
hands have been moved for easier viewing of the digital dials. Hold down C for
about four seconds to return to the Timekeeping Mode.
Accuracy at normal temperature: 15 seconds a month
Timekeeping: Hour, minutes, seconds, p.m. (PM), year, month, day, day of the
week, alarm countdown
Time format: 12-hour and 24-hour
World Time Mode
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to
2099
Other: Home City code (can be assigned one of 48 city codes); Standard Time/
Daylight Saving Time (summer time)
World Time: 48 cities (31 time zones)
Other: Daylight Saving Time/Standard Time
■ The time for my World Time City is off in the World Time Mode.
This could be due to incorrect switching between standard time and daylight saving
time. See “To specify standard time or daylight saving time (DST) for a city” (page
E-37) for more information.
Charging
Stopwatch:
■ The watch does not resume operation after I expose it to light.
This can happen after the power level drops to Level 5 (page E-15). Continue
exposing the watch to light until the battery power indicator shows H or M.
Measuring unit: 1/100 second
Measuring capacity: 59' 59.99"
Measuring modes: Elapsed time, split time, two finishes
E-68
E-69
Operation Guide 5231
Countdown Timer:
Measuring unit: 1 second
Countdown range: 100 minutes
Countdown start time setting range: 1 to 100 minutes (1-second increments)
Alarms: 5 Daily alarms; Hourly Time Signal
Illumination: LED; Selectable illumination duration
Other: Battery power indicator; Power Saving; Button operation tone on/off
Power Supply: Solar panel and one rechargeable battery
Approximate battery operating time: 8 months (from full charge to Level 4) under
the following conditions:
City Code Table
x Watch not exposed to light
x Internal timekeeping
x Display on 18 hours per day, sleep state 6 hours per day
x 1 illumination operation (1.5 seconds) per day
x 10 seconds of alarm operation per day
x 1 hand movement for easy viewing of the digital dials per day
Frequent use of illumination runs down the battery.
E-70
L-1
City Code Table
City
UTC Offset/
City
UTC Offset/
City
City
Code
GMT Differential
Code
GMT Differential
City
Code
UTC Offset/
City
UTC Offset/
City
City
GMT Differential
Code
GMT Differential
DXB Dubai
KBL Kabul
KHI Karachi
DEL Delhi
KTM Kathmandu
DAC Dhaka
RGN Yangon
BKK Bangkok
SIN Singapore
HKG Hong Kong
BJS Beijing
TPE Taipei
+4
+4.5
+5
+5.5
+5.75
+6
GUM Guam
+10
PPG Pago Pago
HNL Honolulu
–11
–10
–9
RAI Praia
UTC
LIS Lisbon
LON London
MAD Madrid
PAR Paris
ROM Rome
BER Berlin
STO Stockholm
ATH Athens
CAI Cairo
–1
0
SYD Sydney
NOU Noumea
WLG Wellington
+11
+12
ANC Anchorage
YVR Vancouver
LAX Los Angeles
YEA Edmonton
DEN Denver
MEX Mexico City
CHI Chicago
NYC New York
SCL Santiago
–8
–7
xꢀ
xꢀ
ꢀBased on data as of December 2010.
ꢀThe rules governing global times
(UTC offset and GMT differential) and
summer time are determined by each
individual country.
+6.5
+7
+1
+2
–6
–5
–4
+8
YHZ Halifax
JRS Jerusalem
MOW Moscow
JED Jeddah
THR Tehran
SEL Seoul
TYO Tokyo
ADL Adelaide
+9
YYT St. Johns
RIO Rio De Janeiro
FEN Fernando De Noronha
–3.5
–3
–2
+3
+9.5
+3.5
L-2
L-3
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