Casio Digital 25mm Ring Watch CRW001-1D

In celebration of the 50th anniversary of its watch business, CASIO is proud to introduce its first-ever ring watch. This innovative digital timepiece combines timekeeping practicality with a playful twist made possible through advanced metal forming technology and the development of a miniaturized module. The watch's case, back, and ring band are precision-crafted using MIM (Metal Injection Molding), a technique that injects powdered metal into a mold to create the intricate full-metal ring design. Even fine details like the band holes are faithfully reproduced at a ring-size scale. Special glass bonding creates outstanding air tightness, for reliable water resistance under normal daily use. The rings size is 22 (US: 10.5 / EU: U), with an inner diameter of 20 mm and a circumference of 62.8 mm. Two size-adjustment spacers for conversion to size 19 (inner diameter: 19 mm) or size 16 (inner diameter: 18 mm) are also included. The size of the watch module of the ring watch is approximately 1/10 that of a standard wristwatch module. Combined with a small button battery, this allows for a fully functional digital watch with three buttons, all fitted within the compact ring configuration. A 7-segment LCD supports hour, minute, second, month, date, day, dual time, and stopwatch display functions. Preset the time of your choice, and the ring watch gives off a subtle, flashing light — not only handy for keeping time, but also a poetic nod to the fleeting twinkle of time