G Shock GMAS Mid-Size Casioak GMAS2100-1A

From G-SHOCK, the toughness watches that are ever evolving in an endless pursuit of strength, this downsized version of the popular GA-2100 model has a simple, thin design that eliminates waste while maintaining a tough structure.

The base GA-2100 model is a thinner G-SHOCK model that inherits the octagonal shape of the first DW-5000C model. The flat face and simple bar indices create a simple yet solid impression.

The colouring is a matte black that goes with any fashion. The glittering metallic bar indices enhance the texture.

• Case / bezel material: Carbon/Resin
• Resin Band
• Neobrite
• Carbon Core Guard Structure
• Shock Resistant
• Mineral Glass
• 200-meter water resistance
• LED: White
• 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)
• World time: 31 time zones (48 cities + coordinated universal time
• Daylight saving on/off
• 1/1000-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

Other: speed (0 to 1998 units/hour), Distance input (0.0 to 99.9)

• Countdown timer

Measuring unit: 1 second

Countdown range: 24 hours

Countdown start time setting range: 1 second to 24 hours (1-second increments, and 1-hour increments)

• 5 daily alarms
• Hourly time signal
• Full auto-calendar (to year 2099)
• Button operation tone on/off
• 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, day

• Accuracy: ±15 seconds per month
• Approx. battery life: 3 years on SR726W x 2
• Size of case / Total weight Size of case : 46.2×42.9×11.2mm Total weight : 41g