Go bold with the GA-2100-1ADR — where minimalist design meets uncompromising G-SHOCK toughness.
Sleek, stealthy, and built for everyday resilience, the GA-2100-1ADR redefines the iconic octagonal G-SHOCK silhouette in an all-black finish. Featuring a lightweight carbon-reinforced resin case and band, this timepiece is powered by Carbon Core Guard technology for superior shock resistance without added bulk. Slim, modern, and effortlessly versatile, it delivers rugged durability with a clean street-ready aesthetic.
Dial: Matte black finish with subtle tonal accents
Case Diameter (L × W × H) MM: 48.5 × 45.4 × 11.8
Case Material: Carbon-reinforced resin (Carbon Core Guard structure)
Bracelet: Resin band (Black)
Construction: Shock resistant, Carbon Core Guard structure
Power supply and battery life: Approx. 3 years on SR726W × 2
Glass: Mineral glass
Gender: Men / Unisex
Water-Resistance: 200-meter water resistance
World Time: 31 time zones (48 cities + coordinated universal time), daylight saving on/off, home city/world time city swapping
Watch Features
Stopwatch:
1/100-second stopwatch
Measuring capacity:
00'00''00~59'59''99 (first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring modes: Elapsed time, split time
Timer:
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 second to 24 hours (1-second/1-minute increments)
Alarm/hourly time signal:
5 daily alarms
Hourly time signal
Light:
Double LED light
Selectable illumination duration (1.5 seconds or 3 seconds), afterglow
Light color: LED: White
Calendar: Full auto-calendar (to year 2099)
Mute feature: Button operation tone on/off
Accuracy: ±15 seconds per month
Other features:
Hand shift feature (hands move out of the way to provide an unobstructed view of digital display contents)
12/24-hour format
Regular timekeeping:
Analog: 2 hands (hour, minute – hand moves every 20 seconds)
Digital: Hour, minute, second, am/pm, month, date, day
