MA1011-EB
Operation Guide 5173
Getting Acquainted
Battery discharges in the dark.
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
LEVEL 1
LEVEL 2
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.
Some or all
functions
disabled
LEVEL 3
LEVEL 4
Discharge
• The actual level at which some functions are disabled depends on the watch model.
• Frequent display illumination can run down the battery quickly and require
charging. The following guidelines give an idea of the charging time required to
recover from a single illumination operation.
− Approximately 5 minutes exposure to bright sunlight coming in through a window
− Approximately about 8 hours exposure to indoor fluorescent lighting
• Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.
Keep the watch exposed to bright light
The electricity generated by the solar cell of the watch is
Bright Light
stored by a built-in battery. Leaving or using the watch
where it is not exposed to light causes the battery to run
down. Make sure the watch is exposed to light as much
as possible.
• When you are not wearing the watch on your wrist,
position the face so it is pointed at a source of bright
light.
Solar cell
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function
has turned off the display to conserve power.
• You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly
if the face is even only partially covered.
• The watch continues to operate, even when it is not
exposed to light. Leaving the watch in the dark can
cause the battery to run down, which will result in some
watch functions to be disabled. If the battery goes
dead, you will have to re-configure watch settings after
recharging. To ensure normal watch operation, be sure
to keep it exposed to light as much as possible.
• See “Power Saving Function” for more information.
About This Manual
• 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 sample displays
in this manual are shown using dark figures on a light
background.
Battery charges in the light.
Bright Light
• Button operations are indicated using the letters shown
in the illustration.
Solar cell
(Converts light to
electrical power.)
Electrical
energy
• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
All functions
enabled
Charge
Rechargeable battery
General Guide
• Press C to change from mode to mode.
• In any mode (except a setting mode), press B to illuminate the display for about
one second.
Timekeeping Mode
World Time Mode
Stopwatch Mode
Countdown Timer Mode
Alarm Mode
Press C.
Radio Controlled Atomic Timekeeping
To specify your Home City
1. In the Timekeeping Mode, hold down A for about
five seconds until the left dial hand points to T1 and
the city code flashes on the upper display. This is the
setting mode.
This watch receives a time calibration signal and updates its time setting accordingly.
• This watch is designed to pick up the time calibration signals transmitted in
Germany (Mainflingen), England (Anthorn), the United States (Fort Collins), China
(Shangqiu), and Japan (Fukushima, Fukuoka/Saga).
City code
Left dial hand
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
2. Press D (east) and B (west) to select the city code
you want to use as your Home City.
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration
signal. You also can perform a manual procedure to set the time and date, when
necessary.
• The first thing you should do after purchasing this watch is to specify
your Home City (the city where you normally will use the watch). For more
information, see “To specify your Home City”.
• When using the watch outside the areas covered by the time signal transmitters,
you will have to adjust the current time setting manually as required. See “To set the
time and date manually” for more information about manual time settings.
• The U.S. time calibration signal can be picked up by the watch while in North
America. The term “North America” in this manual refers to the area that consists of
Canada, the continental United States, and Mexico.
PM indicator
Hour : Minutes
Seconds
LIS, LON
: Lisbon, London
MAD, PAR, ROM, BER, STO : Madrid, Paris, Rome, Berlin, Stockholm
ATH
: Athens
• Using this watch in a country covered by a time calibration signal that is different
from the countries it supports may result in incorrect time indication due to local
application of summer time, etc.
MOW
: Moscow
HKG, BJS, TPE
SEL, TYO
HNL
: Hong Kong, Beijing, Taipei
: Seoul, Tokyo
: Honolulu
ANC
: Anchorage
YVR, LAX
YEA, DEN
MEX, CHI
MIA, YTO, NYC
YHZ
: Vancouver, Los Angeles
: Edmonton, Denver
: Mexico City, Chicago
: Miami, Toronto, New York
: Halifax
YYT
: St. Johns
1
Operation Guide 5173
To toggle a city code time between Standard Time and Daylight Saving Time
Receive successful
• Time calibration signal reception 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 operations or move the watch during this time.
• When a signal receive operation is successful, GET
appears on the upper display and the lower display
shows the time and date of the successful operation.
The watch will adjust its time setting in accordance
with the information provided by the signal.
1. In the World Time Mode, press D to display the city
code (time zone) whose Standard Time/Daylight Saving
Time setting you want to change.
2. Hold down A for about three seconds to toggle between
Daylight Saving Time (DST indicator displayed) and
Standard Time (DST indicator not displayed).
• The watch will return to the Timekeeping Mode if you
press A or if you do not perform any operation for
about one or two minutes.
• ERR will appear on the upper display if the receive
operation is not successful. The watch will not adjust
its time setting in this case. Press A to return to the
Timekeeping Mode.
Receive failed
DST indicator
Swapping your Home City and World Time City
You can use the procedure below to swap your Home City and World Time City. This
changes your Home City to your World Time City, and your World Time City to your
Home City. This capability can come in handy when you frequently travel between two
cities in different time zones.
• If your current World Time City supports receipt of a time calibration signal, making
it your Home City enables calibration signal reception.
• For information about which cities support time calibration signal reception, see “To
specify your Home City”.
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press any
button.
To swap your Home City and World Time City
1. In the World Time Mode, use D to select the World Time City you want.
To check the latest signal reception results
In the Timekeeping Mode, press A to view the last successful receive time and date.
Press A again to return to the previous screen.
2. Hold down A and B until the watch beeps.
• This will make the World Time City you selected in step 1 your Home City, and
cause the hour and minute hands to move to the current time in that city. At the
same time, it will change the Home City you had selected prior to step 2 your
World Time City, and cause the content of the upper and lower displays to change
accordingly.
• After swapping the Home City and World Time City, the watch stays in the World
Time Mode with the city that was selected as the Home City prior to step 2 now
displayed as the World Time City.
Date
Hour : Minutes
Stopwatch
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
The stopwatch lets you measure elapsed time, split
times, and two finishes.
1/100 second
Problem
Probable Cause
What you should do
I can’t receive a • You performed some button
• Perform manual receive at night
or wait until the next auto receive
operation is performed.
• Enter the Timekeeping Mode or
World Time Mode and try again.
• Enter the Countdown Timer Mode
and stop the countdown.
• Check to make sure the watch is
in a location where it can receive
the signal.
• The digital display range of the stopwatch is 23 hours,
Hours
time calibration
signal.
operation during auto receive.
59 minutes, 59.99 seconds.
• The watch is not in the
Timekeeping Mode or World
Time Mode.
• The watch is in a location where
the signal cannot be received for
some reason.
• A countdown timer operation is in
progress.
• Radio interference is often present
during the day time, which can
interfere with signal reception.
• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
• The stopwatch measurement operation continues
even if you exit the Stopwatch Mode.
• Exiting the Stopwatch Mode while a split time is
frozen on the display clears the split time and returns
to elapsed time measurement.
• All of the operations in this section are performed in
the Stopwatch Mode, which you enter by pressing
C.
Minutes
Seconds
SPL indicator
The time setting • If the time is one hour off, the DST • Change the DST setting to Auto
is incorrect
following signal
reception.
setting may be incorrect.
DST.
• The Home City code setting is not • Select the correct Home City code.
correct for the area where you are
using the watch.
To measure times with the stopwatch
• Enter the home position
adjustment mode and adjust the
home positions.
Elapsed Time
• The home positions of the hands
are off.
D
Start
D
Stop
D
D
A
Re-start
Stop
Clear
• For further information, see “Important!” and “Radio-controlled Atomic Timekeeping
Precautions”.
Split Time
D
A
A
D
A
Start
Split
Split release
Stop
Clear
(SPL indicator
displayed)
World Time
Two Finishes
World Time digitally displays the current time in one of 48
Currently selected
D
Start
A
D
A
A
cities (29 time zones) around the world. A simple operation
World Time City
Split
First runner
finishes.
Stop
Second runner Display time of
finishes. second runner.
Split release
Clear
swaps your Home City with the currently selected World
Time City.
• When you enter the World Time Mode, the current month
and day of the World Time City appear first. After about
one second, the current time appears.
Display time of
first runner.
• The times kept in the World Time Mode are synchronized
with the time being kept in the Timekeeping Mode. If you
feel that there is an error in any World Time Mode time,
check to make sure you have the correct city selected as
your Home City. Also check to make sure that the current
time as shown in the Timekeeping Mode is correct.
• Times in the World Time Mode are based on UTC offsets.
See the “City Code Table” at the back of this manual for
information about the UTC offsets that are supported.
Countdown Timer
World Time hour
Current time in
You can set the countdown timer start time within a range
of one minute to 60 minutes. An alarm sounds when the
countdown reaches zero.
Auto-repeat on indicator
Start time (minutes)
World Time City
• You also can select auto-repeat, which automatically
restarts the countdown from the original value you set
whenever zero is reached.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C.
• All of the operations in this section are performed in the World Time Mode, which
you enter by pressing C.
Right Dial Hand
The right dial hand shows the current hour in the World Time City in all modes.
• The right dial hand completes one revolution every 12 hours.
Minutes
To view the current time in another time zone
In the World Time Mode, use D to scroll through available city codes (time zones).
Holding down the button scrolls at high speed.
• When the city code (time zone) you want is selected, you can press A to display
the date. After about one second, the watch will resume regular timekeeping.
Seconds
Number of the current
repeat
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached and auto-repeat is turned off, the
alarm will sound for 10 seconds or until you stop it by pressing any button. The
countdown time is reset to its starting value automatically after the alarm stops.
• When auto-repeat is turned on, the countdown will restart automatically without
pausing when it reaches zero. The alarm sounds to signal when the countdown
reaches zero. The countdown is repeated up to eight times, and then stops.
• The number of the current repeat (1 to 8) is shown in the lower display.
• The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
Press A.
One second
Hour : Minutes Seconds
Date
• To stop a countdown timer operation completely, first pause it (by pressing D),
and then press A. This returns the countdown time to its starting value.
3
Operation Guide 5173
To configure countdown start time and auto-repeat settings
Illumination
1. While the countdown start time is on the display in the
Countdown Timer Mode, hold down A for about three
seconds until the minute setting of the countdown start
time starts to flash. This is the setting mode.
• If the countdown start time is not displayed, use the
procedure under “To use the countdown timer” to
display it.
An LED (light-emitting diode) illuminates the face of the
watch for easy reading in the dark. The watch’s auto light
switch turns on illumination automatically when you angle
the watch towards your face.
• The auto light switch must be turned on (indicated by the
auto light switch on indicator) for it to operate.
• See “Illumination Precautions” for other important
information about using illumination.
Auto light switch
on indicator
2. Press C to move the flashing in the sequence shown
below, and select the setting you want to change.
Start time (minutes)
To illuminate the display manually
In any mode (except a setting mode), press B to turn on
the illumination for about one second.
C
Start Time (Minutes)
Auto-Repeat On/Off
• The above operation turns on illumination regardless of
the current auto light switch setting.
3. Perform the following operations, depending on which setting currently is selected
on the display.
• While the start time setting is flashing, use D (+) and B (–) to change it.
• While the auto-repeat on/off setting (0N or 0FF) is flashing on the display,
press D to toggle auto-repeat on (0N) and off (0FF).
About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you position
your wrist as described below in any mode.
Note that this watch features a “Full Auto LED Light”, so the auto light switch operates
only when available light is below a certain level. It does not illuminate the display
under bright light.
4. Press A to exit the setting mode.
• The auto-repeat on indicator ( ) will appear in the upper display while this
function is turned on.
• The auto light switch is always disabled, regardless of its on/off setting, when any
• Frequent use of auto-repeat and the alarm can run down battery power.
one of the following conditions exists.
− While an alarm is sounding
− While a signal receive operation is in progress
Alarms
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.
• Wear the watch on the outside of your wrist.
When an alarm is turned on, the alarm tone will sound
Alarm number
when its alarm time is reached. One of the alarms is a
snooze alarm, while the other four are one-time alarms.
You also can turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.
• There are five alarm screens numbered
,
,
AL1 AL2
for the one-time alarm, and a snooze
AL4
More than 40°
Parallel to ground
and
AL3
alarm screen indicated by
. The Hourly Time
.
SNZ
Signal screen is indicated by
SIG
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
Warning!
Alarm time
(Hour : Minutes)
• Always make sure you are in a safe place whenever you are reading the
display 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.
• When you are wearing the watch, make sure that its auto light switch is turned
off before riding 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.
To set an alarm time
1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose
time you want to set is displayed.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down B for about three seconds to toggle the auto
light switch on (auto light switch on indicator displayed) and off (auto light switch on
indicator not displayed).
• The auto light switch on indicator is on the display in all modes while the auto light
switch is turned on.
• To set a one-time alarm, display alarm screen
,
AL1
. To set the snooze alarm,
,
or
AL2 AL3 AL4
display the screen.
SNZ
•
is the hourly time signal setting.
SIG
• The snooze alarm repeats every five minutes.
2. After you select an alarm, hold down A for about three seconds until the hour
setting of the alarm time starts to flash. This is the setting mode.
• This operation turns on the alarm automatically.
Power Supply
This watch is equipped with a solar cell and a special rechargeable battery (secondary
battery) that is charged by the electrical power produced by the solar cell. The
illustration shown below shows how you should position the watch for charging.
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.
5. Press A to exit the setting mode.
Example:
Solar cell
Orient the watch so its face is
pointing at a light source.
Alarm Operation
• The illustration shows how to
position a watch with a resin band.
• Note that charging efficiency
drops when any part of the solar
cell is blocked by clothing, etc.
• You should try to keep the watch
outside of your sleeve as much
as possible. Charging is reduced
significantly if the face is even only
partially covered.
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in. In the case of the snooze alarm, the alarm operation is performed a total
of seven times, every five minutes, or until you turn the alarm off.
• Alarm and Hourly Time Signal operations are performed in accordance with the
current time in your Home City, as kept in the Timekeeping Mode.
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the following operations during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation.
Displaying the Timekeeping Mode setting screen
Displaying the
setting screen
SNZ
Important!
To turn an alarm on and off
Alarm on indicator
• Storing 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 rechargeable battery
power to run down. Be sure that the watch is exposed to bright light whenever
possible.
• This watch uses a special rechargeable battery to store power produced by the
solar cell, so regular battery replacement is not required. However, after very long
use, the rechargeable battery may lose its ability to achieve a full charge. If you
experience problems getting the special rechargeable battery to charge fully,
contact your dealer or CASIO distributor about having it replaced.
• Never try to remove or replace the watch’s special battery yourself. Use of the
wrong type of battery can damage the watch.
1. In the Alarm Mode, use D to select an alarm.
2. Press A to toggle it on and off.
Snooze alarm indicator
• Turning on an alarm (
AL4 SNZ
on its Alarm Mode screen.
,
,
,
AL1 AL2 AL3
) displays the alarm on indicator
or
• In all modes, the alarm on indicator is shown for
any alarm that currently is turned on.
• The alarm on indicator flashes while the alarm is
sounding.
• The snooze alarm indicator flashes while the
snooze alarm is sounding and during the 5-minute
intervals between alarms.
• The current time and all other settings return to their initial factory defaults
whenever battery power drops to Level 5 (C: Charge) and when you have the
battery replaced.
ON
• Turn on the watch’s Power Saving function and keep it in an area normally exposed
to bright light when storing it for long periods. This helps to keep the rechargeable
battery from going dead.
To turn the Hourly Time Signal on and off
1. In the Alarm Mode, use D to select the Hourly
Time Signal ( ).
Hourly time signal on indicator
SIG
2. Press A to toggle it on and off.
• The Hourly Time Signal on indicator is shown
on the display in all modes while this function is
turned on.
4
Operation Guide 5173
Battery Power Indicator and Power Recovery Mode indicator
The battery power indicator indicates you the current status of the rechargeable
battery’s power.
Timekeeping
You can adjust the Home City time and date in the Timekeeping Mode manually.
You also can simultaneously display the current time in one other time zone, by
specifying a Dual Time City.
• For information about selecting a Dual Time City, see “To specify the Dual Time
City”.
Battery Power indicator
Level
Battery Power Indicator
Function Status
1 (H)
All functions enabled
• Pressing D in the Timekeeping Mode will cycle the lower display between the
screens shown below.
Home City Date
Home City Time
2 (M)
3 (L)
All functions enabled
D
Auto and manual
receive, illumination,
and beeper disabled
(Charge Soon Alert)
4
Except for
Dual Time
(C: Charge)
timekeeping, all
functions and display
indicators disabled
D
5
All functions disabled
D
(C: Charge)
• The flashing
indicator at Level 3 (L) tells you that battery power is very low,
LOW
and that exposure to bright light for charging is required as soon as possible.
• At Level 5 (C: Charge), all functions are disabled and settings return to their initial
factory defaults. Once the battery reaches Level 2 (M) after falling to Level 5 (C:
Charge), reconfigure the current time, date, and other settings.
• Display indicators reappear as soon as the battery is charged from Level 5 (C:
Charge) to Level 2 (M).
• The watch’s Home City code setting will change automatically to TYO (Tokyo)
whenever the battery drops to Level 5 (C: Charge). With this Home City code
setting, the watch is configured to receive the time calibration signals of Japan.
If you are using the watch in North America or Europe, or China you will need to
change the Home City code setting to match your location whenever the battery
drops to Level 5 (C: Charge).
Read This Before You Set the Time and Date!
This watch is preset with a number of city codes, each of which represents the time
zone where that city is located. When setting the time, it is important that you first
select the correct city code for your Home City (the city where you normally use the
watch). If your location is not included in the preset city codes, select the preset city
code that is in the same time zone as your location.
• Note that all of the times for the World Time City codes and Dual Time City are
displayed in accordance with the time and date settings you configure for the
Timekeeping Mode.
To set the time and date manually
• Leaving the watch exposed to direct sunlight or some other very strong light source
can cause the battery power indicator to show a reading temporarily that is higher
than the actual battery level. The correct battery level should be indicated after a
few minutes.
1. In the Timekeeping Mode, hold down A for about five
seconds until the left dial hand points to T1 and the city
code flashes on the upper display. This is the setting
mode.
Power recovery
mode indicator
• Overuse of display illumination or the beeper can
cause the R (Recover) indicator to appear in the upper
display, which indicates that the watch is in the battery
power recovery mode. Face illumination, the alarm,
the countdown timer alarm, time signals, and all hand
operations are disabled in the power recovery mode.
The watch continues to keep time internally, so regular
timekeeping and function will resume as soon as battery
power recovers to normal levels, which is indicated when
the R indicator disappears.
2. Use D and B to select the city code you want.
• Make sure you select your Home City code before
changing any other setting.
• For full information on city codes, see the “City Code
Table”.
3. Press C to change the flashing screen content in the sequence shown below to
select the other settings.
City Code
DST
12/24-Hour Format
Month
Seconds
Year
Hour
• If R appears frequently, it probably means that remaining
battery power is low. Leave the watch in bright light for
some time to allow it to charge.
Power Saving
Day
Minutes
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving
the watch in the areas described below whenever charging its rechargeable battery.
Also note that allowing the watch to become very hot can cause its liquid crystal
display to black out. The appearance of the LCD should become normal again when
the watch returns to a lower temperature.
4. When the timekeeping setting you want to change is flashing, use D or B to
change it as described below.
Screen:
To do this:
Do this:
Change the city code.
Use D (east) and B (west).
Warning!
Press D.
Cycle between Auto DST (
), Daylight
) and
Leaving the watch in bright light to charge its rechargeable battery 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.
Saving Time (
).
) and Standard Time
(
Press D.
Toggle between 12-hour (
24-hour (
) timekeeping.
- On the dashboard of a car parked in direct sunlight
- Too close to an incandescent lamp
Press D.
Reset the seconds to
.
- Under direct sunlight
Change the hour and minutes.
Change the year, month, or day.
Use D (+) and B (–).
Charging Guide
After a full charge, timekeeping remains enabled for up to about six months.
• The following table shows the amount of time the watch needs to be exposed to
light each day in order to generate enough power for normal daily operations.
Press D.
) and
Toggle between Power Saving on (
off ( ).
Exposure Level (Brightness)
Outdoor sunlight (50,000 lux)
Approximate Exposure Time
8 minutes
5. Press A twice to exit the setting mode.
Sunlight through a window (10,000 lux)
Daylight through a window on a cloudy day (5,000 lux)
Indoor fluorescent lighting (500 lux)
30 minutes
48 minutes
8 hours
• For details about the Daylight Saving Time setting, see “To change the Daylight
Saving Time (summer time) setting”. For information about Power Saving, see
“To turn Power Saving on and off”.
• Auto DST (
) can be selected only while LIS, LON, MAD, PAR, ROM, BER,
STO, ATH, MOW, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN, MEX,
CHI, MIA, YTO, NYC, YHZ, or YYT is selected as the Home City code. For more
information, see “Daylight Saving Time (DST)” below.
• The day of the week is displayed automatically in accordance with the date
(year, month, and day) settings.
• For details about the battery operating time and daily operating conditions, see the
“Power Supply” section of the Specifications.
• Stable operation is promoted by frequent exposure to light.
Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
12-hour and 24-hour timekeeping
• With the 12-hour format, the PM (P) indicator appears to the left of the hour digits
for times in the range of noon to 11:59 p.m. and no indicator appears for times in
the range of midnight to 11:59 a.m.
Exposure Level
(Brightness)
Approximate Exposure Time
Level 5
Level 4
Level 3
Level 2
Level 1
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
Outdoor sunlight
2 hours
6 hours
21 hours
78 hours
126 hours
– – –
6 hours
21 hours
34 hours
– – –
(50,000 lux)
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
Sunlight through a window
(10,000 lux)
Daylight through a window
on a cloudy day (5,000 lux)
Indoor fluorescent lighting
(500 lux)
10 hours
106 hours
• The above exposure time values are all for reference only. Actual required
exposure times depend on lighting conditions.
5
Operation Guide 5173
To adjust the home positions manually
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.
1. In the Timekeeping Mode, hold down D for about three
seconds until H-SET appears on the upper display and
“Sub” flashes on the lower display.
Correct dial hand
positions
The time calibration signals transmitted from Mainflingen (Germany), Anthorn
(England), and Fort Collins (the United States) include both Standard Time and DST
data. When the Auto DST setting is turned on, the watch switches between Standard
Time and DST (Daylight Saving Time) automatically in accordance with the signals.
• Though the time calibration signals transmitted by the Fukushima and Fukuoka/
Saga, Japan transmitters include summer time data, summer time currently is not
implemented in Japan (as of 2010).
• The dial hands are in their correct home positions
when the left dial hand moves to C (Charge) and the
right dial hand moves to 12. If they don’t, use B to
adjust the left dial hand position and D to adjust the
right dial hand position.
2. After confirming that both dial hands are in their correct
home positions, press C.
• This will change to hour hand and minute hand home
position manual correction.
• The default DST setting is Auto DST (
) whenever you select LIS, LON, MAD,
PAR, ROM, BER, STO, ATH, MOW, TYO, ANC, YVR, LAX, YEA, DEN, MEX, CHI,
MIA, YTO, NYC, YHZ, or YYT as your Home City code.
• The hour and minute hands are in their correct home
positions if they are at 12 o’clock. If they are not, use
D (+) and B (–) to adjust their positions as required.
• Pressing C here will return to the setting at the
beginning of step 2.
• If you experience problems receiving the time calibration signal in your area,
it probably is best to switch between Standard Time and Daylight Saving Time
(summer time) manually.
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A for about five
seconds until the left dial hand points to T1 and the city
code flashes on the upper display. This is the setting
mode.
Correct hour and minute
hand positions
3. After everything is the way you want, press A to return
to the Timekeeping Mode.
• After you complete the home position adjustment
procedure, place the watch in a location that allows
for good time calibration signal reception, and then
perform a manual receive operation. See “To perform
manual receive” for more information.
2. Press C. This will display the DST setting screen.
3. Use D to cycle through the DST settings in the sequence
shown below.
DST indicator
Auto DST (
)
DST off (
)
OFF
DST on (
)
ON
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
4. When the setting you want is selected, press A twice to exit the setting mode.
• The DST indicator appears to indicate that Daylight Saving Time is turned on.
Dual Time
Power Saving Function
Dual Time lets you display the current time in another time zone called your “Dual
Time City”, in addition to your Home City’s current time. This feature is very handy for
business professionals and others who need to keep track of the current time in two
different time zones.
When turned on, the Power Saving function enters a sleep
state automatically whenever the watch is left in an area
for a certain period where it is dark. The table below shows
how watch functions are affected by the Power Saving
function.
• For information about how to display the current time in the Dual Time City in the
lower display, see “Timekeeping”.
To specify the Dual Time City
1. In the Timekeeping Mode, hold down A for about five
Currenty selected
seconds until the left dial hand points to T1 and the city
Dual Time City
code flashes on the upper display. This is the setting
Elapsed Time in Dark
Hands and Display
Operation
mode.
Left dial hand
60 to 70 minutes
Left dial hand: PS; Right dial
hand: “12”; Other hands:
Normal; Display: Blank
All functions enabled, except
for displays
2. Press A again. The left dial hand will move to T2 and
the current Dual Time City code will start to flash on
the upper display. This is the Dual Time City selection
screen.
6 or 7 days
Left dial hand: PS; Other
Auto receive, beeper tone,
hands: Stopped at 12 o’clock; illumination, and display
Display: Blank
disabled
3. Use D (east) and B (west) to scroll through the
available city codes.
• See the “City Code Table” for information about city
codes.
• Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
• The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If the watch
is already in the sleep state when 6:00 AM arrives, however, it will remain in the
sleep state.
4. Press A to exit the setting mode.
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area.
• Press any button.
Correction of Hand Home Positions
The hour and minute hands of the watch can be thrown off by exposure to strong
magnetism or impact. The watch is designed to perform hour and minute hand
correction automatically every hour in order to correct variation within the range of
–55 minutes to +5 minutes.
• You can trigger auto hour and minute hand position correction manually, if you
want.
• If the variation is greater than –55 minutes to +5 minutes, you can trigger auto hand
position correction manually or perform correction of the hour and minute hand
home positions manually.
• Angle the watch towards your face for reading.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down A for about five
seconds until the left dial hand points to T1 and the city
code flashes on the upper display. This is the setting
mode.
2. Press C nine times until PS appears in the upper
display and a flashing ON or OFF appears in the lower
display. This is the Power Saving ON/OFF screen.
• If the dial hands are off, you will need to correct their home positions manually.
3. Press D to toggle Power Saving on (ON) and off
(OFF).
4. Press A twice to exit the setting mode.
To trigger auto correction of hand home positions
In the Timekeeping Mode, hold down D for about six
seconds, until H-SET starts flashing on the upper display.
• Note that H-SET will appear on the upper display about
three seconds after you depress D, but you should
not release the button until H-SET starts flashing. The
flashing H-SET indicates that auto hour and minute hand
home position correction has started.
• Auto hour and minute hand home position correction
takes about three and a half minutes to complete. Do not
perform any other watch operation during that time.
On/Off status
Radio-controlled Atomic Timekeeping Precautions
• Strong electrostatic charge can cause the time setting to be thrown off.
• The time calibration signal bounces off the ionosphere. Because of this, such
factors as changes in the reflectivity of the ionosphere, as well as movement of the
ionosphere to higher altitudes due to seasonal atmospheric changes or the time of
day may change the reception range of the signal and make reception temporarily
impossible.
• Even if the time calibration signal is received properly, certain conditions can cause
the time setting to be off by up to one second.
• The watch will return to the Timekeeping Mode automatically after auto correction
is complete.
• You will not be able to trigger auto correction while the watch is in the Countdown
Timer Mode or while a countdown timer operation is in progress.
• To interrupt an ongoing auto correction, press D. This will return to the
Timekeeping Mode.
• The current time setting in accordance with the time calibration signal takes priority
over any time settings you make manually.
• The watch is designed to update the date and day of the week automatically for
the period January 1, 2000 to December 31, 2099. Setting of the date by the time
calibration signal cannot be performed starting from January 1, 2100.
• This watch can receive signals that differentiate between leap years and non-leap
years.
• Though this watch is designed to receive both time data (hour, minutes, seconds)
and date data (year, month, day), certain signal conditions can limit reception to
time data only.
• If you are in an area where proper time calibration signal reception is impossible,
the watch keeps the time with the precision noted in “Specifications”.
• If you have problems with proper time calibration signal reception or if the time
setting is wrong after signal reception, check your current city code, and DST
(Daylight Saving Time) settings.
• The Home City setting reverts to the initial default of TYO (Tokyo) whenever the
battery power drops to Level 5 (C: Charge) or when you have the rechargeable
battery replaced. If this happens, change the Home City to the setting you want.
6
Operation Guide 5173
Transmitters
Alarms: Four one-time alarms; one snooze alarm; Hourly Time Signal
The time calibration signal received by this watch depends on the currently selected
Home City.
• When a U.S. time zone is selected, the watch receives the time calibration signal
transmitted from the United States (Fort Collins).
Illumination: LED (light-emitting diode); Auto Light Switch (Full Auto LED Light
operates only in the dark)
Other: Power Saving; Auto hour and minute hand home position correction each hour
Power Supply: Solar cell and one rechargeable battery
Approximate battery operating time: 6 months (from full charge to Level 5 (C:
Charge)) under the following conditions:
– Watch not exposed to light
– Internal timekeeping
• When a Japanese time zone is selected, the watch receives the time calibration
signals transmitted from Japan (Fukushima and Fukuoka/Saga).
• When a European time zone is selected, the watch receives the time calibration
signals transmitted from Germany (Mainflingen) and England (Anthorn).
• When a China time zone is selected, the watch receives the time calibration signal
transmitted from China (Shangqiu City).
• When your Home City is LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW
(which can receive both the Anthorn and Mainflingen signals), the watch first tries
to pick up the signal it last received successfully. If that fails, it tries the other signal.
For the first receive after you select your Home City, the watch tries the nearest
signal first (Anthorn for LIS, LON, Mainflingen for MAD, PAR, ROM, BER, STO,
ATH, and MOW).
– Display on 18 hours per day, sleep state 6 hours per day
– 1 illumination operation (1.5 seconds) per day
– 10 seconds of alarm operation per day
– 4 minutes of signal reception per day
Frequent use of illumination runs down the battery. Particular care is required when
using the auto light switch.
Auto Return Features
City Code Table
• If you leave the watch with a flashing setting on the display for two or three minutes
without performing any operation, the watch will exit the setting mode automatically.
• The watch will return to the Timekeeping Mode automatically if you do not perform
any operation for two or three minutes in the Alarm Mode.
City
Code
UTC Offset/
GMT Differential
City
Code
UTC Offset/
GMT Differential
City
City
PPG
HNL
ANC
YVR
LAX
YEA
DEN
MEX
CHI
Pago Pago
Honolulu
Anchorage
Vancouver
Los Angeles
Edmonton
Denver
–11
–10
–9
MOW
JED
THR
DXB
KBL
KHI
DEL
DAC
RGN
BKK
SIN
Moscow
Jeddah
Tehran
Dubai
Kabul
Karachi
Delhi
+3
High-Speed Movement
+3.5
+4
+4.5
+5
+5.5
+6
+6.5
+7
• The D and B buttons are used to change the hand setting in various setting
modes. In most cases, holding down these buttons will start high-speed movement
of the applicable hand(s).
–8
–7
–6
Mexico City
Chicago
Dhaka
Initial Screens
Yangon
Bangkok
Singapore
Hong Kong
Beijing
When you enter the World Time Mode or Alarm Mode, the data you were viewing
when you last exited the screen will appear first.
MIA
YTO
NYC
SCL
YHZ
YYT
RIO
Miami
Toronto
–5
–4
New York
Santiago
Halifax
St. Johns
Rio De Janeiro
Praia
HKG
BJS
TPE
Timekeeping
+8
• Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to 00 without changing the minutes.
Taipei
–3.5
–3
–1
SEL
Seoul
Tokyo
+9
TYO
ADL
GUM
SYD
NOU
WLG
• The year can be set in the range of 2000 to 2099.
Adelaide
Guam
Sydney
Noumea
Wellington
+9.5
+10
RAI
• 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 when battery power drops to Level 5 (C: Charge).
• The current time for all city codes in the Timekeeping Mode and World Time Mode
is calculated in accordance with the Coordinated Universal Time (UTC) for each
city, based on your Home City time setting.
UTC
LIS
Lisbon
London
Madrid
Paris
Rome
Berlin
Stockholm
Athens
Cairo
0
LON
MAD
PAR
ROM
BER
STO
ATH
CAI
+11
+12
• ꢀBased on data as of December 2009.
• ꢀThe rules governing global times
(UTC offset and GMT differential) and
summer time are determined by each
individual country.
+1
+2
Illumination Precautions
• Illumination may be hard to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
JRS
Jerusalem
Auto light switch precautions
• Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light
switch to operate when it is not needed, which shortens battery life. If you want to
wear the watch on the inside of your wrist, turn off the auto light switch feature.
• Illumination may not turn on if the face of the watch is more
More than 15 degrees
too high
than 15 degrees above or below parallel. Make sure that the
back of your hand is parallel to the ground.
• Illumination turns off in about one second, even if you keep
the watch pointed towards your face.
• 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 toward you
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.
• Under certain conditions, illumination may not turn on until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
• 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.
Specifications
Accuracy at normal temperature: 15 seconds a month (with no signal calibration)
Digital Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time format: 12-hour and 24-hour
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); Simultaneous Home Time City/Dual
Time City indication
Analog Timekeeping: Hour, minutes (hand moves every 10 seconds)
Time Calibration Signal Reception: Auto receive 6 times a day (Remaining
auto receives cancelled as soon as one is
successful) (5 times a day for the China signal);
Manual receive
Receivable Time Calibration Signals:
Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz);
Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz); Fort
Collins, Colorado, the United States (Call Sign: WWVB, Frequency:
60.0 kHz); Fukushima, Japan (Call Sign: JJY, Frequency: 40.0
kHz); Fukuoka/Saga, Japan (Call Sign: JJY, Frequency: 60.0 kHz);
Shangqiu City, Henan Province, China (Call Sign: BPC, Frequency:
68.5 kHz)
World Time: 48 cities (29 time zones) and Coordinated Universal Time
Other: Daylight Saving Time/Standard Time; Home City/World Time City Swapping
Stopwatch:
Measuring unit: 1/100 second
Measuring capacity: 23:59’ 59.99”
Measuring modes: Elapsed time, split time, two finishes
Countdown Timer:
Measuring unit: 1 second
Input range: 1 minute to 60 minutes (1-minute increments)
Other: Auto-repeat timing
7
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