Case / bezel material: Resin / Stainless steel Resin Band Neobrite Magnetic Resistant Shock Resistant Mineral Glass 200-meter water resistance LED light (Super Illuminator) Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping 1/100-second stopwatch Measuring capacity: 999:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 second Input 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)), 1 dial (stopwatch indicator) Digital: Hour, minute, second, pm, month, date, day Accuracy: ±15 seconds per month Approx. battery life: 3 years on SR927W×2