G-SHOCK GM-2100G-1A9ER

The GM-2100G-1A9 is a metal-covered edition from the iconic octagonal 2100 series, pairing a gold ion-plated stainless steel bezel with an all-black base for a bold, luxurious aesthetic. The forged bezel undergoes precise cutting and polishing to achieve a round hairline finish on top and a mirror polish on the sides, giving it a refined metallic gleam. Underneath, a glass fibre-reinforced resin inner case with shock-absorbing protrusions protects the module while keeping the profile remarkably slim for an analogue-digital combination watch. The black dial features metallic vapour deposition for added depth and detail, with gold-toned hands, indices and logo creating a striking contrast. A textured resin band with a square dot pattern rounds out the design. Full G-SHOCK functionality is on board, including a 1/100-second stopwatch, world time, countdown timer, five daily alarms, hand shift feature and Double LED light with Super Illuminator.

Basic Information

Case size (L× W× H): 49.3 × 44.4 × 11.8 mm
Weight: 72 g
Case and bezel material: Resin / Stainless steel
Band: Resin band
Construction: Shock Resistant
Water resistance: 200-metre water resistance
Power supply and battery life: Approx. battery life: 3 years on SR726W × 2

Exterior

Glass: Mineral Glass
Compatible band size: 145 to 215 mm
Other: Gold ion plated bezel, Neobrite

Watch Features

World time: 31 time zones (48 cities + Coordinated Universal Time), daylight saving on/off
Stopwatch: 1/100-second stopwatch, Measuring capacity: 00’00”00 to 59’59”99 (for the first 60 minutes) 1:00’00 to 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
Timer: 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)
Alarm/hourly time signal: 5 daily alarms, Hourly time signal
Light: 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)
Calendar: Full auto-calendar (to year 2099)
Mute feature: 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: Analogue: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day); Digital: Hour, minute, second, pm, month, date