6 in 1 multi-function altimeter 1.Hours, minutes, seconds, year, month, day and week of shows, the annual range of 2000 ~ 2099 2.5 Group alarm function: a group with Snooze function, four groups of the specified date buzzers The whole point timekeeping function of 3.Stopwatch function, 99 groups stopwatch records check, the largest time-23 hours 59 minutes 59 seconds to stop 4.Countdown function, ...