Case / bezel material: Resin Resin Band Resin Glass 100-meter water resistance LED backlight Afterglow Dual time 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring mode: split time Multi-function alarm (with 1 snooze alarm) Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Regular timekeeping: Hour, minute, second, pm, year, month, date, day Accuracy: ±30 seconds per month Approx. battery life: 10 years on CR2025