Feature:1. Made of high‑quality ABS plastic, durable, corrosion‑resistant and environmentally‑friendly.2. The device is based on electronic orientation sensor and air pressure sensor technology.3. It is very convenient to carry with rope. Small and portable, has a long service life.4. Provide a variety of basic and more accurate information for outdoor enthusiasts.5. A simple type of equipment is made for outdoor enthusiasts. Simple to use.Specification:Condition: 100% Brand NewItem Type: AltimeterMaterial: ABSWeight: Approx. 92g / 3.2ozProduct Size: Approx. 9.1 x 5cm / 3.6 x 2.0 inColor: BlackBattery: 2 x AAA battery (Not Included)Function:Altimeter (range): Up to 999.9 meters / 3280 feet (resolution ratio of 3 m / 9 feet)Barometer (range): 350mbar-1100mbar (resolution ratio -0.1mbar)Digital Compass: Display bearing in degrees and base pointsThermometer (range): -10 degrees to +60 degrees, (format): °F / °CWeather Forecast: Start the machine, you can forecast the weather within 12-24 hours, the effective range is 30-50kmLED Backlight: In any state, press any one to turn on the backlight. When the backlight is turned on, press any one to extend the time for 5 secondsClock Format: 12Hr / 24Hr (AM / PM) Package List:1 x Digital Altimeter (Batteries Not Included)1 x Rope1 x ManualNote:1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.