Multifunction Digital Altimeter Barometer Thermometer Compass Handheld Outdoor Meter Device Item Type: Multifunction Digital Altimeter Altimeter: Approx. -700~9000m / -2300~29500ft measurement range (the altimeter can be used for initial calibration) Resolution: Approx. 1m / 3.3ft Barometer: 300mbar-1100mbar measuring range Resolution: 0.1mbar Electronic Compass: 16 directional mode display External magnetic field correction Accuracy: ±3° Resolution: 1° Thermometer: Measuring range: -10℃-+60℃ (℃ and ℉ unit adjustable) Resolution: 0.1℃ Weather Forecast and Time: Forecast 12 to 24 hours weather conditions 4 types of weather forecasts: Sunny-partly sunny-cloudy-rainy 12/24 hour time format Electronic Backlight: 5 seconds high brightness blue LED electronic backlight Battery: 2 x AAA (not included) Accessories: Lanyard, English user manual