The simple type device is ideal for outdoor sports enthusiasts. For outdoor sports enthusiasts provide broad, necessary and more precise information. electronic altimeter (altimeter weather forecast compass Barometer clock). backlight, no matter in any environment, you can clearly see the reading on the LCD screen. Scope of application: hiking, camping, mountaineering, and other outdoor places. Material ABS Power Supply 2 x AAA (not included) Specifications: 1. Altimeter: Measuring range: -700 ~ 9000m (-2300 ~ 29500ft) Resolution ratio: 1 meter or 3ft 2. Barometer: Measuring range: 300mbar-1100mbar Resolution ratio: 0.1mbar 3. Compass: 8-bearing mode display The external magnetic field correction Precision: /-3 Resolution ratio: 1 degree 4. Thermometer: Measuring range: -10~ 60 degree Resolution ratio: 0.1 degree 5. Weather Forecast: Weather forecast for the next 12 to 24 hours. 4 Kinds of weather status to describe weather conditions: Sunny, Slight Sunny, Cloudy, Rain. 6. Time: Time with Hour, Minute, Second, 24h clock display. 5 Seconds blue LED backlight. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3cm measuring deviation due to manual measurement. Package Included:1 x Compass The guide ball faces your reading direction, which is the direction you face head-on.