G-SHOCK GA-2100BM-7A8 - Analog-Digital Octagon
Silver on the dial and nothing on the band. This is the most stripped-back thing G-SHOCK has done with the octagon.
The GA-2100BM is a 2100 Series model built on the thin Carbon Core Guard case, in carbon-reinforced resin, with a translucent band that leaves the case sides visible. Where the blue version uses the transparency for contrast, this one uses it for near-absence.
Silver face, clear band, 45.4 mm across and 11.8 mm deep at 51 grams. The skeleton hands and the LCD are the only dark elements on the watch. Neobrite on the markers, double LED lighting the face and display separately. 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.
Reads almost colourless in daylight. The most quietly odd watch in the 2100 line.
Perfect for: clear band G-SHOCK watches, silver dial watches, minimal analog-digital watches.
Specifications
- Collection
- 2100 Series
- Case Diameter
- 45.4 mm
- Case Thickness
- 11.8 mm
- Case Material
- Carbon / Resin
- Crystal
- Mineral Glass
- Water Resistance
- 200 m (20 ATM)
- Dial Color
- Silver
- 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
- Resin Band
- Strap Color
- Transparent Color
- Reference
- GA-2100BM-7A8
- Released
- 2025-04-02
- Case Size
- 48.5 x 45.4 x 11.8 mm
- Weight
- 51 g
- Finish
- Neobrite
- Construction
- Shock Resistant; Carbon Core Guard structure
- 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