Bold style, practical functionality ƒ?? A heavy-duty timepiece with large easy-read, easy-use LCD screen and big, bold case. Easily access the LED light from a button on front of the case for even easier use. With 100-meter water resistance and 10-year battery life, you wonƒ??t have to worry about this watch for ages. Equipped with dual time, stopwatch, timer, alarm, and more, these watches keep you on track all day long, from sports and recreation to work and virtually everything in between. Case / bezel material: Resin Resin Band Resin Glass 100-meter water resistance LED backlight, AfterglowLED:Amber Dual time 1/100-second stopwatchMeasuring capacity: 23:59'59.99''Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)Other: Auto-repeat 5 multi-function alarms (with 1 snooze alarm) Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Regular timekeeping: Hour, minute, second, pm, month, date, day Accuracy: ¶ñ30 seconds per month Approx. battery life: 10 years on CR2032 Size of case : 54.4 Ç? 49.7 Ç? 15.9 mm Total weight : 52 g