Water resistance - 100-meter water resistanceTough SOLARStopwatch, Countdown timerSmartphone Link feature: Mobile link (Wireless linking using Bluetooth®)Apps - CASIO WATCHES, App connectivity feature - Auto time adjustment, Easy watch setting, Approximately 300 world time cities, Stopwatch data transfer, Time & place, Phone finderAlarm/hourly time signalLight- Double LED light LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)Full auto-calendar (to year 2099)Accuracy: 15 seconds per month12/24-hour formatRegular timekeeping: Hour, minute, second, pm, month, date, day