Casio G-Shock GA-B2100CY-1A Men’s Tough Solar Bluetooth Carbon Core Watch NIBWT

This Casio G-Shock GA-B2100CY-1A features the iconic octagonal “CasiOak” design with a stealth black resin case accented by high-visibility yellow details. Built with Casio’s Carbon Core Guard structure, the case delivers exceptional shock resistance while remaining lightweight and comfortable on the wrist.

Powered by Tough Solar technology, this watch charges from natural and artificial light to maintain reliable operation without frequent battery changes. Bluetooth connectivity allows seamless pairing with the Casio Watches app for automatic time adjustment, world time selection, alarm management, and configuration directly from your smartphone. Additional features include 200-meter water resistance, world time, stopwatch, countdown timer, alarms, LED backlight, and full G-Shock durability standards.

This model is not available on Casio’s official website. The watch is new, unworn with original G-Shock presentation tin, hang tag, warranty card, and instruction manual.