Simplify your life with the popular analog-digital combination GMAS2100 in your choice of smoky, monochromatic colors.
The same tough construction of the original GA2100, but in an even slimmer, more compact design. The flat watch face and simple bar indexes project a minimalist look and feel that shows you know right where you’re going. A casual, comfortable G-SHOCK in stylish solid colors.
Specifications
Case size (L× W× H) 46.2 × 42.9 × 11.2 mm
Weight 41 g
Case / bezel material: Carbon / Resin 
Resin Band
Shock Resistant
Carbon Core Guard structure
200-meter water resistance
Power supply and battery life Approx. battery life: 3 years on SR726W X 2
Exterior
Mineral Glass
Compatible band size 140 to 205 mm
Other
Neobrite
Watch Features
World time
31 time zones (48 cities + coordinated universal time), daylight saving on/off
1/100-second stopwatch
Measuring capacity:00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes)
Measuring unit:1/100 second (for the first 60 minutes)1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
5 daily alarms
Hourly time signal
Double LED light
LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED:White
Full auto-calendar (to year 2099)
Button operation tone on/off
Accuracy: ±15 seconds per month
Other features
12/24-hour format
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
Regular timekeeping:
Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)
Digital: Hour, minute, second, pm, month, date