DW-5600EG-9V DW5600 Casio G-Shock Chronograph 200m Digital Watch 

Specification :
Shock resistant (G-SHOCK)
Electro-luminescent backlight, Afterglow
1/100-second stopwatch
Measuring capacity: 23:59'59.99"
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Countdown timer
Input range: 1 second to 24 hours
Unit: 1 second
Other: Auto-repeat
Multi-function alarm
Hourly time signal
Auto-calendar (to year 2039)
12/24-hour formats
Regular timekeeping: Hour, minutes, seconds, pm, month, date, day
Accuracy: ±15 seconds per month
Approx. battery life: 2 years on CR2016