Casio has introduced a new full-metal addition to its G-Shock lineup with the GMC-B2100, now listed in Japan. The watch builds on the design language of the original DW-5000C, retaining the signature octagonal form.
The GMC-B2100 features a stainless steel case and bezel, shaped using a multi-step process that includes forging, cutting, and polishing. The top surface of the bezel uses a circumferential hairline finish, while the bevels are mirror-polished. A silver metallic vapor-deposited dial is paired with black sub-dials, giving the watch a monochrome, high-contrast look suited for both daily wear and active use. The metal band also carries over the dimple design seen in earlier resin models and uses a one-push tri-fold clasp.
Despite its full-metal construction, the watch maintains G-Shock’s shock-resistant structure. Casio integrates a fine resin cushioning layer between the bezel and case to absorb impacts. The watch measures 51.3 × 46.3 × 12.4 mm and weighs 171 grams. It also offers 20 ATM water resistance.
The GMC-B2100 includes a wide set of functions. It supports world time with a dual time display and the ability to swap home and local time. There is a stopwatch with 1-second precision and split timing, a 24-hour countdown timer, and a daily alarm. A fully automatic calendar and date-day display are also included. Visibility is supported by a white LED backlight with afterglow and Neobrite coating.
Bluetooth connectivity enables pairing with the CASIO WATCHES app. This allows automatic time correction, easy clock setting, world time access for around 300 cities, and a phone finder feature. The watch uses Casio’s Tough Solar system, offering up to five months of operation on a full charge, or up to 18 months in power-saving mode. When not connected, accuracy is rated at ±15 seconds per month. Manufacturing takes place at Yamagata Casio, the original birthplace of G-Shock production.
Pricing & availability
The GMC-B2100 is scheduled for release in April 2026, with a retail price of ¥107,800 ($675). Pre-orders are now open in Japan.
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