Casio G-Shock GA-B2100-1A1DR

Product Overview

Upgrade the retro look you love with the octagonal GA-B2100 line. This series inherits the iconic design concept of the very first G-SHOCK but evolves for the modern era with Smartphone Link and Tough Solar power.

While maintaining the legendary octagonal form, this model employs a Carbon Core Guard structure to preserve the slim, comfortable fit of the original while adding superior strength. This collection serves as a vibrant homage to the first color G-SHOCK models, bringing back classic tones with a meticulous, high-texture finish.

Major Features

• Tough Solar Technology: Reliable solar-powered timekeeping converts light into energy for constant, stable operation.
• Smartphone Link: Bluetooth® connectivity ensures your watch is always accurate and easy to configure via your phone.
• Carbon Core Guard: A carbon fiber-reinforced resin case offers extreme strength, lightness, and excellent weather resistance.
• 20-Bar Water Resistance: Built for high-pressure environments, perfect for swimming and water sports.
• Super Illuminator: High-brightness double LED light ensures the watch remains perfectly readable in total darkness.
• Enhanced Dial Texture: A dual-layer dial construction adds depth and dimensionality, with varied surface treatments for a premium look.

Advanced Smart Functions (via CASIO WATCHES App)

• Time & Place Log: Pressing a button on the watch records the current date, time, and your exact position on a map. This is an essential tool for maintaining a detailed activity or travel log.
• Reminder Setting: Never miss a deadline. The watch provides alerts for up to five upcoming events that you can customize directly within the app.
• Automatic Time Adjustment: Stay precise with automatic syncing four times a day via Bluetooth®.
• Expanded World Time: Access and manage World Time for over 300 cities globally, including easy Home Time/World Time switching.
• Phone Finder: Locate your misplaced smartphone quickly by triggering a tone alert directly from your watch.

Technical Specifications

Basic Information

• Case Size (L× W× H): 48.5 × 45.4 × 11.9 mm
• Weight: 52 g
• Case & Bezel Material: Carbon / Resin
• Band: Durable Resin Band
• Construction: Shock-resistant structure with Carbon Core Guard
• Power Supply: Tough Solar (Solar powered)
• Battery Performance: Approx. 7 months on a full charge (normal use) and up to 18 months in total darkness with Power Saving enabled.

Watch Features

• World Time: 38 time zones (38 cities + UTC) with city name display and auto summer time (DST) switching.
• Stopwatch: 1/100-second stopwatch with elapsed time and lap/split modes.
• Timer: Countdown timer (60-minute range) with 1-second and 1-minute increments.
• Alarms: 5 daily alarms and hourly time signal.
• Hand Shift: Hands move out of the way with a single command to provide an unobstructed view of the digital display.
• Calendar: Full auto-calendar (to year 2099) with 6-language day display options.
• Accuracy: ±15 seconds per month (without mobile link).

The Evolution of Toughness

Carbon Fiber Strength

The unique shock-resistant structure uses a carbon-reinforced case to protect the internal module. This innovative material allows the GA-B2100 to remain one of the thinnest and lightest models in the G-SHOCK catalog while improving its structural integrity.

Reliable Connectivity

Through the Bluetooth® integration, you can manage your timer, alarm settings, and reminders with a user-friendly smartphone interface. Whether you are traveling across time zones or managing a busy daily schedule, the GA-B2100 keeps you perfectly in sync.