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Operation Guide 3125
To measure times with the stopwatch
Elapsed time
Start
Stop
Re-start
Split time
Split
Split release
Start
(SPL displayed)
Two Finishes
Start
Split
Stop
First runner
Second runner
finishes.
finishes.
Display time of
first runner.
Dual Time
The Dual Time Mode lets you keep track of time in a
Timekeeping Mode time
different time zone.
(Hour : Minutes)
• In the Dual Time Mode, the seconds count is
synchronized with the seconds count of the
Mode indicator
Timekeeping Mode.
To set the Dual Time
1. Press B to enter the Dual Time Mode.
2. Hold down A until the hour setting starts to flash,
which indicates the setting screen.
3. Press B to move the flashing between the hour and
minutes settings.
4. Press C to increase the setting. Holding down C
changes the setting at high speed.
Seconds
5. Press A to exit the setting screen.
Hour : Minutes
Illumination
The display of the watch is illluminated by an LED (light-
emitting diode) and a light guide panel for easy reading in
indicator
the dark.
• You can specify 1.5 seconds or 3 seconds as the
illumination duration.
• See "Illumination Precautions" for other important
information about using illumination.
To illuminate the display
In any mode, press L to illuminate the display.
To specify the illumination duration
In the Timekeeping Mode, hold down C for about two seconds to toggle the
illumination duration between 3 seconds (
(
indicator not displayed).
• Pressing C also toggles between 12-hour and 24-hour timekeeping.
• The
indicator is displayed in all modes when the illumination duration setting is
three seconds.
• To protect against running down the watch's battery, the watch automatically
switches to the 1.5-second setting about seven hours after the 3-second setting is
selected. To continue to use the 3-second setting, perform the above procedure
again.
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 do not perform any operation for one or two minutes when a setting screen is
displayed, the watch will automatically exit the setting screen.
Illumination Precautions
• Illumination may be hard to see when viewed under direct sunlight.
• Illumination automatically turns off whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
Stop
Clear
Stop
Clear
Split release
Clear
Display time of
second runner.
indicator displayed) and 1.5 seconds
2
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