Shock Resistance 200M Water Resistance Mineral Glass Shock Resistant 200 Meter Water Resistant Electro-Luminescent Backlight with Afterglow Mineral Crystal 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 second Auto-repeat function Daily Alarm Hourly time signal Accuracy: ± 15 seconds per month Battery: 2 years on CR2016 Module 1659
