Features 50 meter water resistant Auto electro-luminescent backlight with afterglow Dual time 1/100 second stopwatch Measuring capacity: 23:59'59.99 Measuring mode: elapsed time, Split time, 1st-2nd place times Countdown alarm Input range: 1 second to 24 hours Measuring unit: 1/10 second Auto-repeat fucntion, progress beeper function Hourly time signal Daily alarm 12/24-hour formats Accuracy: +/-30 seconds per month Battery:Approx. 3 years on CR1616
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