1, Altimeter (12 hours altitude trend chart and climb rate) 2, Barometer (24 hours air pressure trend chart) 3, Compass 4, Thermometer 5, Weather Forecast 6, Pedometer, step counter, calorie, distance record 7, Time functions: hour, minute, second, year(2000-2099), month, date, weekday, 12H/24H format 8, Alarm clock (2 sets alarm clock, hourly alarm) 9, Countdown timer (99:59:59~0) 10, Stopwatch (0~99:59:59), 11 sets of data 11, 10 level contrast adjustment of LCD 12, Worldtime functions (daylight saving time switch automatically) 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