Specifications: - Case / bezel material: Resin - Resin Band - 200-meter water resistance - Mineral Glass - Shock Resistant - Electro-luminescent backlight - Afterglow - 1/100-second stopwatch - Measuring capacity: 23:59'59.99" - Measuring modes: Elapsed time, split time, 1st-2nd place times - Countdown timer - Input range: 1 minute 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 - Size of case/total weight: 48.5 X 43 X 14.7 mm/59 g - EL:Blue Green