CASIO G-SHOCK GBM-2100A-1A3JF Analog-Digital Tough Solar Bluetooth Watch

Product Overview

The GBM-2100A-1A3JF is a modern evolution of the iconic 2100 series, combining a slim, octagonal silhouette with a stylish metal bezel, Bluetooth smartphone connectivity, and eco-friendly Tough Solar power. The watch features a durable Carbon Core Guard structure and a biomass plastic band, making it both tough and environmentally conscious. Perfect for everyday casual wear and business settings alike, it offers smart convenience without compromising G-SHOCK’s legendary ruggedness.

Key Specifications

• Model: GBM-2100A-1A3JF

• Water Resistance: 20 ATM (200 meters)

• Case Size: 49.3 × 44.4 × 11.9 mm

• Weight: 72.0 g

• Warranty: 1-year domestic manufacturer warranty

• Accessories: Original Casio box and instruction manual

Mobile Link & App Functions

• Bluetooth connection to smartphones via “CASIO WATCHES” app

• Automatic time correction

• Easy clock setting

• World time for approx. 300 cities

• Time and place reminders

• Mobile phone finder

Main Features

• World Time: 38 cities (38 time zones) + UTC, daylight saving auto-setting, home city swap

• Stopwatch: 1/100 second (under 1 hour) and 1 second (over 1 hour), 24-hour max, with lap/split

• Timer: Up to 60 minutes, adjustable in 1-second increments

• Alarms: 5 daily alarms + hourly chime

• Light: Dual LED Super Illuminator (dial and LCD) with adjustable afterglow (1.5 or 3 seconds)

• Calendar: Fully automatic calendar, leap year compatible

• Operation Sound: ON/OFF switchable

• Power Saving: Display turns off after inactivity in darkness to save power

• Battery Indicator: Displays current solar charge level

• Battery Life: Approx. 7 months from full charge (solar) / 18 months in power-saving mode

• Accuracy: ±15 seconds/month without smartphone link

Design Notes

• Retains the classic 2100 series octagonal design with added metal bezel for elegance and toughness

• Biomass plastic band supports environmental sustainability without sacrificing comfort or durability