* Barometer & Altimeter: The air pressure value and on the screen is the air pressure at the current location. The height value on the screen is the sea level of the current location. Press [ALTI/+] button to switch the use of altimeter and barometer.
* Relative Altitude: You can use this unit to monitor the ascending or descending altitude from one certain location or the
relative altitude for any mountain or object etc.
* Weather Forecast: Apart from detecting the altitude, barometer also helps to forecast the weather for the forthcoming 12 to 24 hours basing on barometric pressure changes. The effective range is 30-50kms.
* History Altitude Record: Press [HISTORY] button, you can view records of history altitude and air pressure. It will display the most previous record in this mode, then you can press [ALTI/+] or [-] button to forwards or backwards view history records. It can save most 256pcs records, the records’ distance are five minutes, and you can change the distance from 1-60 minutes if you press and hold [HISTORY] button for 2 seconds.
* Save power design: When you don’t want to use the device, you press and hold [SET] button for 5 seconds, the device will stop all display enter into dormancy mode. And then you press any button, it will resume previous display. Backlight: In any mode,it can give you backlight for 5 seconds that you press any button.
