SPECIFICATIONS This brand new 6 in 1 blue LED backlight digital compass, integrates the functions of altimeter, barometer, electronic compass, thermometer, weather forecast and time. Small size, light weight, portable and useful, ideal companion for outdoor activities lovers Altimeter: Range of 700 to 8680 m / 2296 to 29500 ft (relative height measurement, reference setting required) Accuracy of 1 m or 3 ft Barometer: Range of 300 mbar to 1100 mbar Accuracy of 1 mbar Electronic compass: 4-bearing mode display Magnetic declination setting Accuracy of 1° Thermometer: Range of -10°C(14°F) to +60°C(140°F) (°C and°F selectable) Accuracy of 1°C Weather forecast: Weather forecast for next 12 to 24 hours 4 weather status indicating: sunny, slight sunny, cloudy, rainy Time: 24 hours format clock display Dimension: 68 X 55 X 16 mm Screen diameter: 37 mm