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Using the Timer
1. Use the operations below to perform a
timer operation.
D
D
D
(Time up)
Resume
Pause
(Measurement operation starts.)
Start
●
A beeper will sound for 10 seconds to
let you know when the end of a
countdown is reached.
●
To reset a paused countdown to the
start time, press (A).
2. Press any button to stop the tone.
Light
The watch has an LED light that you can use
to illuminate the display for about two seconds
for viewing in the dark. When turned on,
illumination becomes gradually brighter and
then gradually dimmer.
The watch also has an auto light function that
automatically illuminates the display
whenever the watch is angled for reading in
the dark.
Illuminating the Display
Manually
Pressing (B) turns on illumination.
●
Illumination will turn off automatically if an
alarm starts to sound.
Auto Light
If Auto Light is enabled, display illumination
will turn on automatically whenever the watch
is positioned at an angle of 40 degrees or more
when it is dark.
40
degrees
or more
Important!
●
Auto Light may not operate properly
when the watch is at a horizontal angle
of 15 degrees or greater from
horizontal as shown in the illustration
below.
●
Auto Light may operate unintentionally
and run down the battery if the watch
is blocked from light by your sleeve.
●
Electro-static charge or magnetism
can interfere with proper auto light
operation. If this happens, try lowering
your arm and then angle it towards
your face again.
●
When moving the watch you may note
a slight rattling sound. This is due to
operation of the auto light switch,
which determines the current
orientation of the watch. It does not
indicate malfunction.
Note
●
Auto Light is disabled when any one of
the conditions below exists.
ー
Alarm, timer alert, or other beeper
sounding
Configuring the Auto Light
Setting
1. Enter the Timekeeping Mode.
l
Navigating Between Modes
2. Hold down (B) for about three seconds.
●
Each time (B) is held down for about
three seconds, Auto Light will toggle
between enabled and disabled.
DisabledEnabled
Specifying the Illumination
Duration
You can select either two seconds or four
seconds as the illumination duration.
1. Enter the Timekeeping Mode.
l
Navigating Between Modes
2. Hold down (A) for about two seconds until
[HT] flashes.
3. Press (C) 12 times to display [LIGHT].
4. Press (D) to toggle between the two
illumination duration settings.
[2]: 2-second illumination
[4]: 4-second illumination
5. Press (A) to exit the setting screen.
Operation Guide 3459/3461
15
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