The G-Shock 2100 Series GA-2100SR-1A features a black colorway and a carbon and resin construction.
- Carbon core guard structure
- Shock resistant
- 200-meter water resistance
- Resin band
- Mineral glass
- Double LED light
- 31 time zones
- 1/100-second stopwatch
- Countdown timer
- 5 daily alarms
- Hourly time signal
- Full auto-calendar
- Button operation tone on/off
- 12/24-hour format
- Accuracy: ±15 seconds per month
- Battery life: approximately 3 years
- Dimensions: 1.91 x 1.79 x 0.46