1. The device is the ideal companion for outdoor (motoring, boating, camping, hunting and mountaineering) with six functions, digital altimeter, barometer, compass, thermometer, weather forecasting, time and calendar.
2. All functions are displayed on LCD screen with super bright LED backlight.
3. The device is very easy to use and very easy to carry using detachable string.
4. Powered by 2 x AAA batteries with auto power-down feature.
5. Altimeter
6. Range: -2296fts to 29500fts