Casio LF-10WH-1

Specification - 3550     
1/100-second stopwatch
Measuring capacity: 59'59.99"
Measuring modes: Elapsed time
12/24-hour format    
Accuracy: ±30 seconds per month        
Approx. battery life
2 years on CR1216
Full auto-calendar (to year 2099)    
Daily alarm
Hourly time signal    
LED backlight
Afterglow
Regular timekeeping
Hour, minute, second, pm, year, month, date, day
Size of case / total weight
LF-10WH ...... 40.8 x 24.1 x 9.1 mm / 18g