The G-Shock GA-2100-1A1ER is a refined iteration of the original GA-2100, maintaining its signature octagonal bezel while achieving a slimmer 11.8 mm profile. This digital-analog hybrid watch is designed for durability and functionality.

• Case crafted from carbon-infused fine resin with a Carbon Core Guard Structure
• Shock-resistant construction
• Mineral glass
• 200-meter water resistance
• LED light for the dial
• Neo-display for long-lasting luminescence
• World time function displaying current time in major cities and regions globally
• Stopwatch function measuring elapsed time, split time, and end time with 1/100-second accuracy up to 24 hours
• 1/1-second countdown timer up to 24 hours
• Adjustable band
• Weighs 51g

Brand

Casio

Colorway

Black

Colors

black

Listed

December 17, 2025

Model

GA-2100-1A1ER

Gender

unisex

Category

Apparel & Accessories/Jewelry/Watches