Casio G-Shock Illuminator - Black - Alarm - Chronograph - Countdown AlarmAccuracy at Normal Temperature: + 15 Seconds Month Timekeeping Mode: Hours, Minutes, Seconds, am pm, Month, Day, Date, Auto Calendar Pre Programmed to the year 2039 Alarm Mode: Multi Function Alarm, Hourly Time Signal Countdown Alarm Mode: Measuring Unit 1 Second, Input Range from 1 Second to 24 Hours Auto Repeat Function, Repeat Function Stopwatch Mode: Measuring Units 1 100 Second (for the first 60 Minutes), 1 Second after 60 Minutes; Measuring