50th Anniversary Digital Ring Watch

To celebrate 50 years of Casio watches, Casio reintroduces its first-ever ring watch—a playful yet practical digital timepiece miniaturized with advanced metalworking and MIM (Metal Injection Molding) technology. Made from a single piece of metal with water-resistant sealing, it features a 7-segment LCD displaying time, date, dual time, and stopwatch, plus a subtle flashing light as a nod to the fleeting nature of time. Sized to fit a US 10.5 (EU) ring with two included spacers, it’s powered by a downsized module and button battery—all in a sleek, full-metal ring.

Stainless Steel; Mineral Glass

Digital

Water Resistant

Imported

Style: CRW-001

Size

Case: 25.2mm x 19.5mm x 6.2mm

 

Ring inner diameter: 20mm

Ring circumference: 62.8mm

Fits a size 22 finger (US 10.5, EU U); two size-adjusting spacers in size 19 (19-mm inner diameter) and 16 (18-mm inner diameter) are included

Features

Approx. battery life: 2 years on SR621SW

 

World time

 

Dual time

 

1/100-second stopwatch

 

Measuring capacity: 00’00”00~59’59”99

 

Alarm/hourly time signal

 

Time flash (daily and every hour on the hour)

 

* The Time Flash light may not be visible when ambient lighting is bright.

 

* Time Flash is intended for entertainment purposes.

 

LED backlight (May not be visible in bright light)

 

Auto-calendar (28 days for February)

 

Accuracy: ±30 seconds per month

 

Other features

 

12/24-hour format

 

Regular timekeeping: Digital: Hour, minute, second, pm, month, date, day

 

Casio Limited One-Year Warranty