G-Shock Duo Black with Blue Face

Introducing a collection of new G-SHOCK models whose 35mm diameter faces and large cases give them a look of power and strength. Dial rings and raised hour markers create three-dimensional depth that gives the face plenty of character. The popular G-SHOCK three-dial face design incorporates one analogue dial in the center, with digital dials on either side. These watches are designed and engineered to deliver outstanding shock resistance and water resistance, as well as anti-magnetism. Over-sized buttons come with a checkered anti-slip surface to make operations fast and sure. 1/1000-second stopwatch, velocity indicator, World Time, 5 alarms and much more provides these models with unmatched function and performance.


Case / bezel material: Resin
Resin Band

Magnetic Resistant
Shock Resistant

Mineral Glass

200-metre water resistance

LED light
Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow

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

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

5 daily alarms (with 1 snooze alarm)
Hourly time signal
Full auto-calendar (to year 2099)
12/24-hour format
Regular timekeeping

analogue: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (speed)
Digital: Hour, minute, second, pm, month, date, day
Accuracy: =/-15 seconds per month

Approx. battery life: 2 years on CR1220

Size of case : 55x51.2x16.9mm
Total weight : 70g

GA100-1A2 G-Shock Duo Black