CASIO W-219H-8BVDF Digital Black Resin Strap

Case and bezel material : Resin 
Water resistance : 50-meter water resistance
Power supply and battery life : Approx. battery life: 7 years on CR2016
Glass: Resin Glass
Compatible band size: 145 to 215 mm
Stopwatch : 1/100-second stopwatch
Measuring capacity: 59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
Alarm/hourly time signal ,Daily alarm
Hourly time signal ,Light, LED backlight
Calendar: Auto-calendar (set at 28 days for February)
Accuracy: Accuracy: ±30 seconds per month
Other features: 12/24-hour format
Regular timekeeping: Hour, minute, second, pm, date, day
Diameter :  47.1mm