G Shock GMAS Mid-Size Casioak GMAS2100-4A

This series downsizes the GA-2100 to create a simple and slim design.

The octagonal bezel, flat face, simple bar hour markers, and carbon core guard structure that are distinctive features of the GA-2100 are now available in a compact configuration.

• Case / bezel material: Carbon/Resin
• Resin Band
• Neobrite
• Carbon Core Guard Structure
• Shock Resistant
• Mineral Glass
• 200-metre 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

Analogue: 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