G-Shock’s most popular large case analog/digital series introduces a matte black watch, the GA100MB-1A. The face and band are matte black with green accents which highlight the toughness and coolness of G-Shock.

• Case size (L× W× H)

  55 × 51.2 × 16.9 mm

• Weight

  72 g

• Case and bezel material

  Resin

• Band

  Resin Band

• Construction

  Magnetic Resistant
  Shock Resistant

• Water resistance

  200-meter water resistance

• Power supply and battery life

  Approx. battery life: 2 years on CR1220

• Glass

  Mineral Glass

• World time

  World time 29 time zones (48 cities coordinated universal time), daylight saving on/off, home city/world time city swapping

• Stopwatch

  1/1000-second stopwatch Measuring capacity: 99:59'59.999'' Measuring modes: Elapsed time, lap time, split time Others: Speed (0 to 1998 units/hour), Distance input (0.0 to 99.9) Mach indicator (speed exceeding 1225 units/hour)

• Timer

  Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Other: Auto-repeat

• 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)

• Accuracy

  Accuracy: ±15 seconds per month

• Other features

  12/24-hour format
  Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (speed) Digital: Hour, minute, second, pm, month, date, day