-The device is based on the technology of electronic bearing sensor and barometric sensor. The digital altimeter is designed for outdoor use, the detachable string makes the digital compass a perfect hand-carry device for various outdoor activates it will give you backlight when you press any button in any time
-8 in 1 Function: Digital altimeter, with digital barometer, digital compass, weather forecast, time, calendar, thermometer, and backlight
-The device is based on the technology of electronic bearing sensor and barometric sensor
-The digital altimeter is designed for outdoor use, the detachable string makes the digital compass a perfect hand-carry device for various outdoor activates
-It will give you backlight when you press any button in any time
-Forecast the weather for the forthcoming 12 to 24 hours basing on barometric pressure changes






