G-SHOCK GM-2100YRA-8A - Metal-Clad Octagon
G-SHOCK GM-2100YRA-8A - Metal-Clad Octagon
Most metallic finishes on a watch are trying to look like something else. This one is trying to look like the year it came from.
The GM-2100YRA belongs to G-SHOCK's 2100 Series in metal-clad form, a stainless steel bezel over a resin case, and it is part of Casio's fine metallic treatment, where the steel is finished to a fine, low-glare texture rather than polished. Underneath it is the same thin octagon the series is built on.
The band is tough silicone, softer against the wrist than standard resin, and the face runs black with red accents against a silver bezel. The case is 49.3 by 44.4 mm and 11.8 mm deep, 84 grams. Two hands over an LCD, hand shift to clear them, Neobrite markers, double LED. Module 5611 gives 31 time zones, a 1/100-second stopwatch, a countdown timer and five alarms on a three-year battery. 200 m water resistant.
The most textural watch in the 2100 line, and the one that photographs least like the rest.
Perfect for: fine metallic G-SHOCK watches, silicone band watches, black and red analog-digital watches.
Specifications
- Collection
- 2100 Series
- Case Diameter
- 44.4 mm
- Case Thickness
- 11.8 mm
- Case Material
- Resin / Stainless steel
- Crystal
- Mineral Glass
- Water Resistance
- 200 m (20 ATM)
- Dial Color
- Black / Red
- Movement
- Quartz
- Caliber
- Casio module 5611
- Power Reserve
- 3 years on SR726W X 2
- Functions
- World time, Stopwatch, Countdown timer, Alarm, Auto calendar
- Strap / Bracelet
- Tough Silicone Band (Resin Band)
- Strap Color
- Silver
- Reference
- GM-2100YRA-8A
- Released
- 2026-03-10
- Case Size
- 49.3 x 44.4 x 11.8 mm
- Weight
- 84 g
- Finish
- Neobrite
- Construction
- Shock Resistant
- Band Size
- 145 to 215 mm
- Power
- 3 years on SR726W X 2
- Accuracy
- ±15 seconds per month
- Calendar
- Full auto-calendar (to year 2099)
- Illumination
- 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
- Stopwatch
- 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
- 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
- 5 daily alarms; Hourly time signal
- Other Features
- 12/24-hour format; Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.); Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day) Digital: Hour, minute, second, pm, month, date