Item Type: Digital Compass Material: ABS Altimeter Range: -2296 ft to 29500 ft Altimeter Resolution: 1 Meter or 3 Feet Barometer Range: 350-1100 hpa Barometer Resolution: 1 hpa Compass Accuracy: +/-3 Degrees Compass Resolution: 1 Degree Thermometer Range: -5-+50 Thermometer Accuracy: 2 Thermometer Resolution: 1 Weather Forecast: (Sunny, Cloudy, Rainy) Battery Type: 2 x AAA Batteries (Not Included) Package List 1 x Digital Compass 1 x Lanyard 1 x Manual 18 in 1 Functions: Contains digital altimeter, digital barometer, digital compass, weather forecast, time, calendar, thermometer and backlight. 2Altimeter and Compass: Altimeter range: -2296 to 29500 feet, can record 256 historical altitudes; compass shows bearing in degrees and cardinal points. 3Thermometer and Clock: Thermometer is freely switchable in Celsius, Fahrenheit format; Clock in 12hour or 24hour format. Backlight is provided for you whenever you press any button. 4High Accuracy: The digital compass is based on electronic orientation sensor and air pressure sensor technology for precise measurement. 5Outdoor Use: The digital altimeter is designed for outdoor use, and the detachable lanyard makes the digital compass the perfect handheld device for all kinds of outdoor activities.