CASIO General F-91WS-7DF Youth Digital White Clear Rubber Strap

Casio Youth Digital F-91WS-7DF Features
1/100-second stopwatch
LED light
Water resistant 

Casio Youth Digital F-91WS-7DF Specification
Case / bezel material: Resin
Resin Band
Resin Glass 
Water Resistance
LED light
1/100-second stopwatch
Measuring capacity: 59'59.99"
Measuring modes: Net time, split time, 1st-2nd place times
Daily alarm
Hourly time signal
Auto-calendar (set at 28 days for February)
12/24-hour format
Button operation tone on/off
Regular time keeping: Digital: Hour, minute, second, pm, month, date, day
Accuracy: ±30 seconds per month
Approx. battery life: 7 years on CR2016
Size of case : 38.2×35.2×8.5mm
Total weight : 21 g