Casio G-Shock GA-B2100-1ADR Black Analog-Digital Dial Black Resin Strap Men's Watch

The Casio G-Shock GA-B2100-1ADR is a modern evolution of the iconic “CasiOak” GA-2100 series, featuring the signature octagonal bezel design combined with advanced technology. This model integrates Bluetooth smartphone connectivity and Tough Solar charging, providing accurate timekeeping and reliable performance without frequent battery replacement.

Built with Carbon Core Guard structure, the watch uses a carbon fiber-reinforced resin case that offers excellent strength while remaining lightweight and comfortable on the wrist.

The watch features a black analog-digital dial with resin case and strap, delivering a clean sporty look suitable for both casual wear and outdoor activities. With shock resistance and 200-meter water resistance, the GA-B2100-1ADR maintains the legendary toughness that defines the G-Shock brand.

• Iconic octagonal “CasiOak” G-Shock design

• Tough Solar power system for solar charging

• Bluetooth smartphone connectivity with CASIO WATCHES app

• Carbon Core Guard structure for durability and lightweight design

• Shock-resistant construction

• 200-meter water resistance suitable for swimming and outdoor sports

• Double LED Super Illuminator light for improved visibility

• World time for 38 cities / time zones

• Hand shift feature for clear digital display

• Full auto-calendar (to year 2099)

Brand: Casio

Collection: G-Shock GA-B2100 Series

Model: GA-B2100-1ADR

Movement: Solar Quartz (Tough Solar)

Display Type: Analog-Digital

Dial Color: Black

Case Material: Carbon / Resin

Case Size: 48.5 × 45.4 × 11.9 mm

Glass: Mineral Glass

Band Material: Resin

Band Color: Black

Clasp: Buckle

Water Resistance: 200 meters (20 ATM)

Functions

• Bluetooth Mobile Link (CASIO WATCHES app)

• Auto time adjustment via smartphone

• World time (38 cities / time zones)

• 1/100-second stopwatch

• Countdown timer

• 5 daily alarms

• Double LED Super Illuminator light

• Hand shift feature

• Power-saving mode

• Battery level indicator

• Full auto-calendar (to 2099)

Accuracy: ±15 seconds per month (without mobile link)

Power Reserve: Approx. 7 months on full charge

Weight: Approx. 52 g

100% Original Casio G-Shock Watches

Fast & Secure Shipping

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Easy Returns & Exchanges

Quality Checked Before Dispatch

Trusted Watch Retailer

• Men looking for a durable G-Shock sports watch

• Everyday casual and outdoor wear

• Travelers needing world time and smartphone sync

• Watch enthusiasts who like the CasiOak design

• A perfect gift for G-Shock collectors

Q: Is the GA-B2100-1ADR solar powered?

Yes, it uses Casio Tough Solar technology, which charges the watch using sunlight or artificial light.

Q: Does the watch connect to a smartphone?

Yes, the watch supports Bluetooth mobile link, allowing it to sync with the CASIO WATCHES app for automatic time adjustment and settings.

Q: Is the watch suitable for swimming?

Yes, the watch offers 200-meter water resistance, making it suitable for swimming and water sports.

Q: What is Carbon Core Guard structure?

It is a carbon-reinforced resin case design that improves durability while keeping the watch lightweight.