Casio G-Shock GA-B2100BBR-1ADR

Product Overview

Go bold, tough, and intense with the G-SHOCK Black and Red collection. This high-performance evolution of the iconic octagonal design features a vibrant, high-saturation red LCD that pops against a matte black bezel and band. This daring design doesn't just look the part—it pushes the envelope of visibility and style.

Built with a Carbon Core Guard structure and eco-conscious Bio-based resins, this watch offers a unique statement in all black with a touch of bold red. It is the perfect blend of retro-inspired form and future-ready technology.

Major Features

• Tough Solar Power: Converts light from any source into energy, ensuring stable operation even when using power-hungry functions.
• Smartphone Link: Bluetooth® connectivity provides automatic time adjustment, easy watch settings, and a handy Phone Finder.
• Eco-Friendly Build: Case and band are crafted from bio-based resins, reducing environmental impact without sacrificing durability.
• Carbon Core Guard: Protects the internal module with a carbon-reinforced resin case for ultimate shock resistance.
• High Visibility: Double LED "Super Illuminator" and a high-contrast red LCD ensure clarity in any lighting condition.
• Ultra-Lightweight: At only 52 grams, it offers a comfortable, "barely there" feel on the wrist.

Technical Specifications

Basic Information

• Case Size (L× W× H): 48.5 × 45.4 × 11.9 mm
• Weight: 52 g
• Construction: Shock Resistant; Carbon Core Guard structure
• Water Resistance: 200-meter water resistance
• Power Supply: Tough Solar (Solar powered)
• Run Time: Up to 7 months on full charge (normal use); 18 months in total darkness (Power Saving mode).

Smart Connectivity

• App: CASIO WATCHES
• Mobile Link: Wireless linking via Bluetooth® for 300+ world time cities, reminders, and "Time & Place" logging.
• Auto Time Adjustment: Connects to your smartphone to keep the watch precise to the second.

Watch Features

• World Time: 38 time zones (38 cities + UTC) with Home City/World Time swapping.
• Stopwatch: 1/100-second stopwatch with elapsed time and lap/split timing.
• Timer: 60-minute countdown timer with 1-second increments.
• Alarms: 5 daily alarms and hourly time signal.
• Calendar: Full auto-calendar (to year 2099) with date/month swapping and day display in 6 languages.
• Mute Feature: Button operation tone on/off.
• Hand Shift: Hands move out of the way for a clear view of the digital display.

Sustainability Meets Innovation

The Power of Light

Say goodbye to frequent battery changes. The Tough Solar system is efficient enough to charge even from weak fluorescent light, keeping the Bluetooth® and high-brightness LED features running smoothly without interruption.

Carbon Core Guard Structure

By utilizing a carbon-fiber-reinforced resin case, G-SHOCK has created a watch that is both incredibly strong and remarkably thin. The material's high strength-to-weight ratio allows for a slimmer 11.9 mm profile while maintaining the legendary toughness the brand is known for.

Bio-Based Materials

In a step toward a more sustainable future, the resin used for the bezel and band is derived from renewable organic resources. This material provides the same durability and comfort expected from a G-SHOCK while reducing the carbon footprint of production.