Casio G-STEEL 2100 Series – Model GBM-2100A-8B

The GBM-2100A-8B combines bold metal styling with advanced functionality, offering a smart, eco-conscious design in a sleek and compact form. Equipped with Smartphone Link via Bluetooth and Tough Solar charging, it’s a watch that balances modern technology with classic G-STEEL toughness.

Design Overview

This model features a light yellow gold-colored dial with black-accented indexes, contrasted by a bold stainless-steel bezel. The case and band incorporate bio-based resin, reducing environmental impact while ensuring strength and comfort.

With its refined vapor deposition finish, the GBM-2100A-8B transitions effortlessly from casual wear to business meetings, making it a versatile addition to any collection.

Key Highlights

✔ Smartphone Link with Bluetooth® (CASIO WATCHES app)
✔ Tough Solar system for eco-friendly charging
✔ Bio-based resin materials for sustainable design
✔ Shock-resistant & 200-meter water resistance
✔ Light yellow gold dial with black indexes for a sophisticated look

Features & Specifications

Case & Band

• Case Size: 49.3 × 44.4 × 11.9 mm

• Material: Bio-based resin / Stainless steel

• Band: Bio-based resin band

• Weight: 72 g

Exterior

• Glass: Mineral Glass

• Compatible Band Size: 145–215 mm

• Other: Neobrite

Water Resistance

• 200-meter water resistance

Timekeeping & Connectivity

• Bluetooth: Smartphone Link for automatic time adjustment

• App: CASIO WATCHES

• Features: Auto time adjustment, easy watch setting, ~300 world time cities, time & place, reminder, phone finder

Watch Functions

• World Time: 38 time zones, DST switching, home/world city swapping

• Stopwatch: 1/100-second stopwatch (up to 23:59’59); elapsed time, lap/split time

• Timer: Countdown (1 sec–60 min, 1-sec/1-min increments)

• Alarms: 5 daily alarms + hourly time signal

• Calendar: Full auto-calendar (to 2099)

• Format: 12/24-hour format

• Accuracy: ±15 seconds/month (w/o mobile link)

Lighting

• Double LED light (Super Illuminator for dial + backlight for digital display)

• Selectable illumination (1.5 or 3 sec) + afterglow

Battery & Power

• Tough Solar (solar-powered)

• Battery Run Time: ~7 months (normal use), up to 18 months with power saving

Other Features

• Power Saving (auto display off in the dark)

• Battery level indicator

• Hand shift function

• Date/month/day of week display (6 languages)

Summary

The Casio G-STEEL GBM-2100A-8B is a refined, eco-conscious timepiece that blends advanced functionality with a bold metal design. With Smartphone Link, solar charging, and bio-based materials, it’s built for those who want sustainability, style, and toughness in a single watch.

For more details, visit the official CASIO G-SHOCK 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.