Casio G-Shock GA-2100 Lineup Carbon Core Guard Structure Black and Brilliant White Series Bio-Based Watch GA2100WD-1A GA-2100WD-1A

Go bold and confident with a strikingly straightforward G-SHOCK in high-contrast black and white. 

Beginning with a base of G-SHOCK jet black and then bring in a bright dial finished in brilliant white vapor deposition. The monochromatic statement is a study in contrasts—matte black against glossy white. This abundantly cool design is available in five different models.

Choose your favorite — the GA-700 with front button design, the GA-100 or GA-110 with large case, the triple-graph design of the DW-6900, or the GA-2100 with octagonal case.

Case / bezel material: Carbon / Bio-based resin
Bio-based resin band
Mineral Glass
Neobrite
Shock Resistant
Carbon Core Guard structure
200-meter water resistance
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
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
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping:
Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)
Digital: Hour, minute, second, pm, month, date
Accuracy: ±15 seconds per month
Approx. battery life: 3 years on SR726W X 2
Size of case : 48.5 × 45.4 × 11.8 mm
Total weight : 51 g