Specifications Case / bezel material: Resin Resin Band Mineral Glass Shock Resistant 100-meter water resistance LED light Afterglow World time 29 time zones (48 cities + coordinated universal time), daylight saving on/off 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times 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 Analog: 2 hands (hour, minute (hand moves every 20 seconds)) Digital: Hour, minute, second, pm, month, date, day Accuracy: ±30 seconds per month Approx. battery life: 2 years on SR726W × 2 Size of case / Total weight Size of case : 46.3×43.4×15.8mm 45g