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Operation Guide 2499/3092
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.
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.
Stopping a Snooze Alarm Operation
After a snooze alarm time is reached, you can perform the following steps during any
5-minute interval between alarms to stop the snooze alarm operation.
To stop a Snooze Alarm Operation
1. While in the Alarm Mode, press D to display the alarm screen.
2. Next, press A to turn off the alarm or to select the one-time alarm.
• Note that this also changes the alarm type setting. If you want to use the snooze
alarm again, you must re-select it as the alarm type. See “To select the alarm type”
for more information.
To test the alarm
• In the Alarm Mode, hold down D to sound the alarm.
To turn the Hourly Time Signal on and off
1. In the Alarm Mode, press D to display the Hourly Time Signal screen.
2. Press A to turn it on and off.
Indicates Hourly Time Signal is on.
Indicates Hourly Time Signal is off.
• The Hourly Time Signal on indicator is shown on the display in all modes while this
function is turned on.
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.
Backlight Precautions
The backlight uses an LED (light-emitting diode) and a light guide panel that cause
the entire display to glow for easy reading in the dark.
In any mode, press B to illuminate the display for about one second.
• The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
• The backlight automatically stops illuminating whenever an alarm sounds.
• Frequent use of the backlight shortens the battery life.