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Operation Guide 3149
Illumination
An LED (light-emitting diode) illuminate the display for
easy reading in the dark.
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.
To illuminate the display
Press B to turn on illumination.
Dual Time
The Dual Time Mode lets you keep track of time in a different time zone.
• In the Dual Time Mode, the seconds count is synchronized with the seconds count
of the Timekeeping Mode.
To set the Dual Time
1.Press C to enter the Dual Time Mode.
2.In the Dual Time Mode, hold down A until the hour
setting starts to flash, which indicates the setting
screen.
3.Press C to change the selection in the following
sequence.
Hour Minutes
4.Press D to increase the setting.
5.Press A to exit the setting screen.
Countdown Timer
The countdown timer can be set within a range of
1 minute to 24 hours. An alarm sounds when the
countdown reaches zero.
• You can also select auto-repeat, which automatically
restarts the countdown from the original value you set
whenever zero is reached.
• Countdown timer functions are available in the
Countdown Timer Mode, which you enter by pressing
C.
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
sounds for 10 seconds or until you stop it by pressing any button. The countdown
time is automatically reset to its starting value after the alarm stops.
• Press D while a countdown operation is in progress to pause it. Press D again to
resume the countdown.
• To completely stop a countdown operation, first pause it (by pressing D), and then
press A. This returns the countdown time to its starting value.
To set the countdown start time
1.In the Countdown Timer Mode, hold down A until the
hours setting of the countdown start time starts to flash,
which indicates the setting screen.
2.Press C to move the flashing between the hours and
minutes settings.
3.While a setting is flashing, use D to change it.
• To set the starting value of the countdown time to
24 hours, set
0:00
.
4.Press A to exit the setting screen.
To turn auto-repeat on and off
1.In the Countdown Timer Mode, hold down A until the
hours setting of the countdown start time starts to flash,
which indicates the setting screen.
2.Press B to toggle auto-repeat on (
AUTO REPEAT
displayed) and off (
AUTO REPEAT
not displayed).
• Note that pressing B in the above operation also turns
on the illumination.
• When the end of the countdown is reached while
auto-repeat is on, the alarm sounds, but the countdown
restarts from the beginning without stopping. You can
stop the countdown by pressing D and manually reset
to the start time by pressing A.
• The auto-repeat indicator appears in the Countdown
Timer Mode only.
Stopwatch
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The display range of the stopwatch is 23 hours,
59 minutes, 59.99 seconds.
• 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.
To measure times with the stopwatch
Elapsed time
Start Stop Re-start Stop Clear
Start
Split
(SPL displayed)
Split release Stop Clear
Start
Split Stop Split release Clear
Split time
Two Finishes
First runner
finishes.
Display time of
first runner.
Second runner
finishes.
Display time of
second runner.
To turn the hourly time signal on and off
1.In the Alarm Mode, use D to select the hourly time
signal (
:00
).
2.Press A to toggle it on and off.
• Turning on the hourly time signal displays the hourly
time signal on indicator.
• The hourly time signal on indicator is displayed in all
modes when the hourly time signal is turned on.
Hour
Minutes
Seconds
Hourly time signal on
indicator
Auto-repeat indicator
1/100 second
Hour
Minutes
Seconds
Hour : Minutes Seconds
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.
Auto return features
• If you leave a screen with flashing digits for two or three minutes without performing
any operation, the watch automatically saves any settings you have made up to that
point and exits the setting screen.
Data and Setting Scrolling
The D button is used to scroll through setting screen data on the display. Holding
down this button during a scroll operation scrolls through the data at high speed.