Casio 50th Anniversary Digital Ring Watch

We celebrate Casio Watch’s 50th anniversary by bringing back the very first ring watch. A whole new style of digital watch — both practical and playful — thanks to a miniature module and advanced metalworking technology.

Creating a ring-sized, full-metal version of the Casio watch’s complex form is no easy feat. To make this possible, we needed to use a special method of metal processing to inject a mixture of fine metal powders and resin into a mold. Using metal injection molding (MIM), the case, case back, and ring are molded in one piece, with even the dimpled design on the band faithfully reproduced. A special glass adhesive technique ensures a tight seal for a watch built to be water-resistant while still allowing the battery to be replaced.

Case size: 25.2 (L) x 19.5 (W) x 6.2 (H) mm

Case and bezel material: Stainless steel 

Power supply and battery life: Approx. battery life: 2 years on SR621SW

Water resistance: Water Resistant

Stock Size: 10 (size-adjusting spacers are included)

Style#: CRW001-1