Casio Digital Stainless Steel Ring Watch for Men CRW-002D-1ADR

"Case size (L× W× H): 25.2 × 18.2 × 6.2 mm
Weight: 15 g
Case and bezel material: Stainless steel
Water Resistant
Battery: SR621SW
Mineral Glass
Compatible band size
The ring has an inner diameter of 20 mm and a circumference of 62.8 mm, fitting 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.
Dual time
Stopwatch: 1/100-second stopwatch
Measuring capacity: 00'00''00~59'59''99
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.
Light: LED backlight (may not be visible in bright light.)
LED:White
Auto-calendar (28 days for February)
Accuracy: ±30 seconds per month
12/24-hour format
Regular timekeeping:
Digital: Hour, minute, second, pm, month, date, day
The warranty DOES NOT COVER damages resulting from impact, accidents, mishandling, or abuse (dents, crushing, knocks)"