CASIO Special Calculator Digital Watch CA-53WF-2BDF

Dual time
8-digit calculator
1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Daily alarm
Hourly time signal
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping: Hour, minute, second, am/pm, year, month, date, day
Accuracy: ±15 seconds per month
Approx. battery life: 5 years on CR2016
Size of case : 43.2×34.4×8.2mm
Total weight : 25g