Colour Variations

At a glance

The toughness of G-SHOCK combined with the power of Earth - innovative CASIO technology enables a coating over resin with laser extraction to simulate a unique, cracked ground texture on the band, face and bezel. The large face base model is the bold, big case GA-100. The separator between the digital displays is also done in a cracked pattern.


12/24 Hour Format

Times can be displayed in either a 12-Hour or 24 Hour Format.

Alarm Function

With Snooze function

5 Daily Alarms- each will sound every day at the time you set

Auto Calendar

Fully automatic calendar, with allowances made for leap years, pre-programmed to 2099

Auto LED Light

LED Light for face: Auto light switch, selectable illumination duration, afterglow

Average Speed Display

Speed (0 to 1998 units/hour), Distance input (0.0 to 99.9

Band Material


Battery Life

2 years on CR1220

Case/Bezel Material


Countdown Timer

Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)

Other: Auto-repeat

Magnetic Resistant

The Case has been specially mounted, so to be shielded from magnetic fields.

Mineral Glass

Hard glass resists scratching

Regular timekeeping

Analogue: 2 hands (hour, minute (hand moves every 20 seconds)); Digital: Hour, minute, second, pm, month, date, day

1 dial (speed)

Shock Resistant

Shock Resistant construction protects against impact and vibration


1/1000th Sec Stopwatch

Water Resistant

200 Metre/20 Bar

World Time

29 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping.


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