FUNCTION 1, Altimeter (altitude trend chart and climb rate) 2, Barometer ( air pressure trend chart) 3, Compass 4, Thermometer 5, Weather Forecast, World Time 6, Pedometer, step counter, calorie, distance record 7, Time functions: hour, minute, second, year(2000-2099), month, date, weekday, 8, Alarm clock (2 sets alarm clock, ) 9, Countdown timer (99:59:59~0) 10, Stopwatch (0~:59:59), 12, Worldtime functions 13, Corporates digital compass, altimeter, barometer, Thermometer, air pressure trend and altitude trend and altitude trend 14, Button tone on or off 15, Battery life remind 16, EL Backlight