8 in 1 Electronic Handheld Compass Altimeter Barometer Thermometer Weather Forecast Time CalendarDescription:1. The equipment is an ideal and simple equipment for outdoor sports enthusiasts.2. It provides comprehensive and accurate information for outdoor sports enthusiasts, such as an electronic altimeter (weather forecast + altitude meter + compass + barometer + clock) with backlight.3. Functions: Altimeter, Barometer, Level Meter, Weather Forecast, Compass, Thermometer, Calendar, Time, Backlight.4. Scope of application: hiking, camping, mountaineering and other outdoor places. Specification:Material: ABS Material: 2 x AAA Battery (Not Included)Altimeter:Measuring Range: -700m 9000m (-2300 2950ft) (altimeter can be corrected for initial test)Resolution: 1 meter or 3ft Barometer:Measuring Range: 300mbar to 1100mbar Resolution: 0.1mbar. Electronic Compass:8-Azimuth Mode DisplayExternal Magnetic Field CorrectionAccuracy: ± 3 DegreesResolution: 1 DegreeThermometer:Measuring Range: -10°C+60°C(°C and °F Optional)Resolution: 0.1 DegreeWeather Forecast & Time:Weather Forecast After 12 to 24 Hours4 Weather Conditions Indicate: Bright-Semi-Bright-Cloudy Day-Rainy Day24 Hours FormatElectronic Backlight: 5 Seconds High Brightness Blue LED Electronic BacklightWarm Tips:1. Avoid using in rain and humid, high or low temperature (temperature: 0°C-50°C