G-SHOCK GBM-2100A-1A3ER

The GBM-2100A-1A3 takes the iconic octagonal 2100 form to a new level with a meticulously finished stainless steel bezel and Bluetooth Smartphone Link paired with Tough Solar power. The bezel is crafted through forging, cutting, and polishing, with a circular hairline finish on top and mirror polish on the sides for a sophisticated gleam. The dial features a green metallic texture achieved through vapor deposition, with an oblong grid pattern and circular hairline finish that accentuate the dimensionality of the LCD and inset dial. Three-dimensional index marks with phosphorescent finish ensure readability in the dark.

Powered by Tough Solar and connected via Bluetooth to the CASIO WATCHES app, the watch automatically adjusts time and eliminates the need for battery changes. The bio-based resin band is made from renewable organic resources to reduce environmental impact. At 72g with 200-meter water resistance, a 1/100-second chronograph, world time across 38 cities, countdown timer, five daily alarms, and a Double LED Super Illuminator, the GBM-2100A-1A3 bridges casual and business settings with equal ease.

Basic Information

Case Size (L× W× H): 49.3 × 44.4 × 11.9 mm
Weight: 72g
Case and Bezel Material: Bio-based Resin / Stainless steel
Band: Bio-based resin band
Construction: Shock Resistant
Water Resistance: 200-meter water resistance
Time Adjustment: Bluetooth: Connects to a smartphone and automatically adjusts the time
Power Supply: Tough Solar (Solar powered)

Smartphone Link

Connectivity: Mobile link (Wireless linking using Bluetooth®)
App: CASIO WATCHES
App Features: Auto time adjustment, Easy watch setting, Approximately 300 world time cities, Time & place, Reminder, Phone finder

Exterior

Glass: Mineral Glass
Compatible Band Size: 145 to 215 mm
Other: Neobrite

Watch Features

World Time: 38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping
Stopwatch: 1/100-second stopwatch
Timer: Countdown timer (1 second to 60 minutes)
Alarm: 5 daily alarms, Hourly time signal
Light: Double LED light (Super Illuminator)
Light Color: LED: White
Calendar: Full auto-calendar (to year 2099)
Energy Saving: Power Saving (display goes blank in the dark)
Battery Display: Battery level indicator
Run Time: Approx. 7 months (normal use without light exposure), 18 months (power save after full charge)
Accuracy: ±15 seconds per month (with no mobile link function)
Other Features:
12/24-hour format
Hand shift feature
Date/month display swapping
Day display (selectable in six languages)
Button operation tone on/off