G-Shock G GBM2100A-1A3

Casio G-Shock G-STEEL 2100 Series - Model GBM2100A-1A3

The GBM2100A-1A3 is a premium model from the G-STEEL 2100 Series, featuring a metal-covered octagonal bezel with Bluetooth® connectivity and Tough Solar charging. This watch blends sophisticated design with G-SHOCK's legendary toughness.

Design Overview

The GBM2100A-1A3 features an octagonal metal bezel with a sleek metallic green dial, giving it a refined yet rugged appearance. Its bio-based resin band offers comfort and durability while contributing to sustainability. The combination of metal and resin ensures both lightweight wearability and robust protection.

Key Highlights

✔ Metal-covered octagonal bezel for a refined yet tough look.
✔ Bluetooth® connectivity for time adjustment and app-linked features.
✔ Tough Solar-powered battery for long-lasting performance.
✔ Bio-based resin band for an eco-conscious design.
✔ 200-meter water resistance for all-terrain usability.

Features

Case & Band

• Case Dimensions: 49.3 × 44.4 × 11.9 mm
• Material: Bio-based Resin / Stainless Steel
• Band: Bio-based Resin Band
• Weight: 72 g

Durability

• Shock-resistant construction for extreme toughness
• 200-meter water resistance, ideal for water activities

Smartphone Link & App Connectivity

• Bluetooth® mobile link for automatic time adjustment
• App: CASIO WATCHES
• Features via app:
  • Auto time adjustment
  • Easy watch setting
  • Approximately 300 world time cities
  • Time & place memory
  • Reminder function
  • Phone finder

Exterior

• Glass: Mineral Glass
• Other: Neobrite (luminous coating for visibility)
• Compatible Band Size: 145 to 215 mm

Timekeeping

• World time: 38 time zones (coordinated universal time), auto summer time (DST) switching
• Analog: 2 hands (hour, minute)
• Digital: Hour, minute, second, am/pm, month, date, day

Timers & Alarms

• Countdown Timer:
  • Measuring unit: 1 second
  • Countdown range: 60 minutes
  • Countdown start setting range: 1 second to 60 minutes (1-second increments, 1-minute increments)
• 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 modes: Elapsed time, lap/split time
• Alarms: 5 daily alarms (with hourly time signal)

Lighting

• Double LED Light:
  • Super Illuminator for the face (selectable illumination duration: 1.5 or 3 seconds)
  • Super Illuminator backlight for digital display
• Light Color: LED White

Battery & Power Features

• Power Source: Tough Solar (solar-powered battery)
• Battery life:
  • 7 months on rechargeable battery (normal use)
  • 18 months in total darkness with power save function

Other Features

• Hand shift feature: Hands move to provide an unobstructed view of digital content.
• 12/24-hour format for flexible time display.
• Date/month display swapping and day display (selectable in six languages).
• Battery level indicator to monitor remaining power.
• Mute feature: Button operation tone on/off.
• Accuracy: ±15 seconds per month (without mobile link function).

Summary

The GBM2100A-1A3 is a perfect blend of elegance and toughness, featuring a metal-covered octagonal bezel, solar-powered charging, and Bluetooth® connectivity for seamless timekeeping. With its stylish green dial, eco-friendly bio-resin band, and 300-city world time feature, this watch is designed for those who appreciate modern functionality with a sophisticated edge.

For more details, visit the official Citizen website here.

Warranty:

• The watch is covered by a warranty, providing assurance and protection for your purchase.

▶︎Processing Time & Shipping Policy

▶︎Refund policy

▶︎We only carry G-SHOCK USA products.

▶︎Unfortunately, we DO NOT ship internationally.