Casio G-Shock Classic Watch GBM-2100A-1A3ER

Introducing the Casio G-Shock GBM-2100A-1A3ER, a technological evolution of the iconic GA-2100 that incorporates Bluetooth connectivity and Tough Solar power. Its gradient green dial with radial textured finish creates a unique visual effect that transitions from intense green at the center to lighter tones toward the edges. The polished stainless steel bezel contrasts elegantly with the matte black resin case, while the strap features a wavy texture that enhances both grip and sporty aesthetics.

At its heart beats the Casio 5729 module, a solar analog-digital caliber with Bluetooth connectivity. The dial displays hours and minutes via luminous silver hands, while a small subdial at 9 o'clock indicates the days of the week. The digital display at 6 o'clock shows multiple data: date, second time zone, battery status, and Bluetooth connection confirmation. Functions include world time with 38 time zones, 1/100-second stopwatch with 200-record memory, 5 daily alarms, countdown timer, and automatic calendar until 2099.

As part of the legendary G-Shock line, this watch was born from the vision of creating the unbreakable timepiece. Since 1983, every G-Shock must pass drop tests from 10 meters high, guaranteeing extreme resistance to shocks, vibrations, and impacts. The Carbon Core Guard construction combines carbon fiber with resin, offering maximum protection with minimum weight.

Shopping at TicTacArea.com means buying from real jewelers with over 30 years of industry experience, serving as official distributors, online since 1999. Every product is genuine, factory-new, and delivered with its official presentation box, documentation, and international warranty.

Technical Specifications

Reference: GBM-2100A-1A3ER
Module/Caliber: 5729
Type: Analog-digital
Movement: Solar Tough Solar
Water resistance: 200 meters
Shock resistance: Yes (Carbon Core Guard structure)
Case material: Resin with stainless steel bezel
Case color: Black with silver bezel
Strap material: Resin
Strap color: Textured black
Dial color: Gradient green
Crystal: Mineral
Light: LED
Diameter: 44.4 mm
Thickness: 11.9 mm
Weight: 72 g
Functions: Bluetooth, world time (38 zones), 1/100s stopwatch, 5 alarms, timer, automatic calendar
Battery: CTL1616 (solar rechargeable)
Made for: Men

User manual

Download the manual in English (PDF)