Multifunctional 6-in-1 digital altimeter ?Integrates the functions of altimeter, barometer, electronic compass, thermometer, weather forecast and clock ?Provides you with real time data on weather forecasts, compass bearings, atmospheric pressure and precise ambient temperature ?All functions are displayed on an LCD screen with super bright LED backlight ?5 seconds automatic power off function for power saving ?Humanistic design with low battery indicator ?Two functional buttons: mode button, set button on the front of this unit --- Mode button: switching for altimeter, barometer, thermometer, compass & clock, switching for?/ ?, meter/ ft --- Set button: for lighting backlight, adjusting for time & sea level pressure, selecting weather status, setting the magnetic declination, enabling compass calibration ?Small-sized, lightweight and compact ?Has a keychain or string for easy carrying ?Quite an ideal companion for outdoor activities lovers Product Specifications: Altimeter Range: -2,296 feet to 29500 feet Resolution: 1 meter or 3 feet Barometer Range: 300mbar to 1100mbar Resolution: 1mbar Weather Forecast Time Span: Forecast for next 12 to 24 hours Weather Status Indication: Sunny, slight sunny, cloudy, rainy Compass Accuracy: ± 3 degree Resolution: ±1 degree Bearing Mode: 4-bearing mode display Thermometer Resolution: 1 degree Temperature Format: ? or ? Temperature Range: -10? to 60? Clock Time Format: 24H Time Accuracy: hour, minute, second Power: CR2032 battery (included) Color: mainly silver as shown in the picture Size: 6.5 x 5.3 x 1.5cm Package Contents: 1 x 6-in-1 Multifunctional Digital Compass 1 x User's Manual