"Bold style, practical functionality — 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 won’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 size (L× W× H) 54.1 × 49.7 × 15.9 mm Weight 52 g Case and bezel material Resin Band Resin Band Water resistance 100-meter water resistance Power supply and battery life Approx. battery life: 10 years on CR2032 Exterior Glass Resin Glass Compatible band size 145 to 215mm Watch Features World time Dual time Stopwatch 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Timer Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Other: Auto-repeat Alarm/hourly time signal Hourly time signal 5 multi-function alarms (with 1 snooze alarm) Light LED backlight Afterglow Light color LED:Amber Calendar Full auto-calendar (to year 2099) Accuracy Accuracy: ±30 seconds per month Other features 12/24-hour format Regular timekeeping: Hour, minute, second, pm, month, date, day"