Based on the successful analog/digital GA100 G-Shock. This is an all digital version in a large size and wide face which not only gives a look of power and strength but makes it extremely easy-to-read and use with its oversized buttons. For added visibilty in dark conditions a newly designed high-density LED light has been employed to light up the dial face from behind. The result is a super luminous display that's a true reflection of G-Shock's desire to keep improving timekeeping.


Mineral Crystal Glass

Shock Resistant

200 Meter Water Resistant

Case / Bezel Material: Resin

Band Material: Resin

Auto LED Backlight (Super Illuminator)

5 Independent Alarms (one-time or daily)

Hourly Time Signal

Flash alert: flasher with buzzer that sounds for alarms hourly time signal countdown timer time-up alarm countdown timer & progress beeper

World Time: 31 time zones (48 cities + UTC) city code display daylight saving on/off

Stopwatch: 1/100-second stopwatch measuring capacity: 23:59'59.99'' measuring modes: Elapsed time split time & 1st-2nd place times

Countdown timer: Measuring unit: 1/10 second range: 24 hours start time setting range: 1 minute to 24 hours (1-second increments 1-minute increments and 1-hour increments) and progress beeper

Full auto-calendar (to year 2099)

Accuracy: ±15 seconds per month

Size: 55.0 x 51.2 x 17.4mm

Weight: 72g

Battery life - approx 7 years

Battery - CR2025

2 Year Warranty


SKU GD100-1A
Brand G Shock

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