Casio CRW001-1D Digital Ring Watch – Silver

Wear Casio's digital watch technology on your finger with the silver stainless steel CRW001-1D ring watch. Precision metal injection moulding creates its solid miniature case and integrated ring band, while mineral glass protects the LCD. The display covers hours, minutes, seconds, date and day, plus dual time, a 1/100-second stopwatch measuring to 59 minutes 59.99 seconds, an LED backlight and 12/24-hour format. It also has a February-28 auto-calendar and Time Flash illumination, which pulses at a selected time or on the hour. Designed for everyday splash resistance rather than swimming, it keeps time to approximately ±30 seconds per month and uses a replaceable SR621SW battery rated for two years. This is one size 22 ring with included reducing spacers for sizes 19 and 16, not separate size variants.

Product Features

• Size: 25.2 × 19.5 × 6.2 mm; inner diameter 20 mm, circumference 62.8 mm (JP 22 / US 10.5 / EU U).

• Material: Stainless steel and mineral glass.

• Fit: Includes ring size-adjusting spacers for 19 mm and 18 mm inner diameters.

• Power: SR621SW battery, approximately 2 years; weight 16 g.

Fun Fact: Casio first introduced its miniaturised ring watch to celebrate 50 years since the launch of the Casiotron, its inaugural watch, in 1974.