Eight functionsdigital altimeterbarometercompassthermometerweather forecasttime calendar and backlight.

Based on the technoloty of electronic bearing sensor and barometric sensor.

The device is very easy to useand easy to carry using the detachable string.

AltimeterRange 700m to 9000m/2300 fts to 29500 fts BarometerRange 3501100 hpa Compassshow bearing in degrees and cardinal point