Go bold with the GA-100BW-1A — where monochrome style meets rugged performance.
Clean, powerful, and built for impact, the GA-100BW-1A delivers a striking black-and-white design that stands out with modern edge. Its oversized case and multi-dimensional dial provide enhanced readability while reinforcing the legendary toughness of G-SHOCK. Designed for those who want a sharp, versatile look without compromising durability, this model blends street style with high-performance functionality.
Dial: Black dial with white accents, multi-layered detailing, and analog-digital display
Case Diameter (L × W × H) MM: 55 × 51.2 × 16.9
Case Material: Resin
Bracelet: Resin band (Black)
Construction: Shock resistant
Power supply and battery life: Approx. 2 years on CR1220
Glass: Mineral glass
Gender: Men / Unisex
Water-Resistance: 200-meter water resistance
World Time
29 time zones (48 cities + coordinated universal time), daylight saving on/off
Watch Features
Stopwatch:
1/1000-second stopwatch
Measuring capacity: 99:59'59.999''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Timer:
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours
Alarm/hourly time signal:
5 daily alarms (with 1 snooze alarm)
Hourly time signal
Light
LED light
Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
Light color: LED: Amber
Calendar: Full auto-calendar (to year 2099)
Mute feature: Button operation tone on/off
Accuracy: ±15 seconds per month
Other features
Magnetic resistant
12/24-hour format
Regular timekeeping:
Analog: 2 hands (hour, minute)
Digital: Hour, minute, second, pm, month, date, day
