GA-100TU-1A3

Practical utility meets smart style—enhanced by G-SHOCK’s renowned toughness and functionality. Featuring a black watch face paired with beige or olive green bands, this two-tone collection embodies the rugged, utilitarian aesthetic of high-performance gear. Choose from five core models: the DW-6900 with its signature triple graph, the GA-700 with its oversized case and metal front button with anti-slip finish, or the larger-case options of the GX-56, GA-100, and GA-110.

Basic Information

• Case size (L× W× H)

  55 × 51.2 × 16.9 mm
  

• Weight

  72 g
  

• Case and bezel material

  Case / bezel material: Resin

• Band

  Resin Band

• Construction

  Shock Resistant

• Water resistance

  200-meter water resistance

• Power supply and battery life

  Approx. battery life: 2 years on CR1220
  

Exterior

• Glass

  Mineral Glass

Watch Features

• 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
  
  

• Flash alert feature

  Flash alert Flashes with buzzer that sounds for alarms, hourly time signals

• 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