Case / bezel material: Resin Resin Band Mineral Glass Shock Resistant 200-meter water resistance Electro-luminescent backlight Afterglow World time 29 time zones (48 cities + coordinated universal time), daylight saving on/off 1/100-second stopwatch Measuring modes: Elapsed time, split time 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) 5 daily alarms (with 1 snooze alarm) Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping Digital: Hour, minute, second, pm, month, date, day Accuracy: ±30 seconds per month Battery: CR2025 Size of Case: 52.4×50×17.7mm Total Weight: 68.2g