Viewing The Face In The Dark; Useful Features - Casio G-Shock GST-B400 Operation Manual

Power Saving Function
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Leaving the watch in a dark location for about
one hour between the hours of 10 p.m. and 6
a.m. will cause the display to go blank, and the
watch to enter Level 1 power saving. If the
watch is left in this condition for six or seven
days, the watch will enter Level 2 power
saving.
Power Saving Level 1 :
Digital display goes blank to save power. The
watch can connect with a phone at this level.
Power Saving Level 2 :
All hands stop and the digital display goes
blank to save power. All functions are
disabled.
Recovering from Power Saving Operation
Use one of the operations below to exit power
saving.
Press any button.
●
Move the watch to a bright location.
●
Note
You can enable or disable Power
●
Saving.
Configuring Power Saving
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Function Settings
Note that the watch also may enter
●
power saving if its face is blocked from
light by your sleeve while you are
wearing it.
Watch Operation Guide 5657

Viewing the Face in the Dark

The watch has an LED light that you can turn
on for reading in the dark.
Turning On Illumination
●
Pressing (B) turns on the light.
Illumination will turn off automatically if an
●
alarm starts to sound.
Illumination is disabled while the hands are
●
moving at high speed.
The light may flicker when it turns on or off.
●
Specifying the Illumination Duration
●
You can select either 1.5 seconds or three
seconds as the illumination duration.
1.
Enter the Timekeeping Mode.
Navigating Between Modes
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2.
Hold down (A) for at least two seconds
until the name of the currently selected
Home City is displayed.
3.
Press (C) 12 times to display [LIGHT].
4.
Press (D) to select an illumination
duration.
[LT1]: 1.5-second light
[LT3]: 3-second light
5.
Press (A) to exit the setting screen.

Useful Features

Pairing the watch with your phone makes a
number of the watch's features easier to use.
Auto time adjustment
Auto Time Adjustment
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Selection of More Than 300 World Time
cities
Configuring World Time Settings
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Recording of Anniversaries and
Appointments
Configuring Reminder Settings
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Home City
In addition, a number of other watch settings
can be configured using your phone.
To transfer data to a watch and to
configure settings, you first need to pair
the watch with your phone.
Getting Ready
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Your phone needs to have the CASIO "G-
●
SHOCK Connected" app installed to pair
with the watch.
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