Feature:1. The device is ideal and simple for outdoor enthusiasts.2. For outdoor sports enthusiasts to provide a wide range of necessary and accurate information such as: electronic altimeter (weather forecast + altimeter + compass + barometer + clock + level + calendar) blue backlight.3. Application for mountaineering, camping, mountaineering and other outdoor places.4. Power by 2 x AAA batteries (not including). Long lasting time.5. Suitable for a variety of outdoor activities.Specification:Condition: 100% Brand NewItem Type: Altitude GaugeMaterial: ABSColor: as picture shownAltitude Gauge:measuring range from -700m to 9000m (-2300 to 2950ft) (altimeter can be initially calibrated)resolution 1 meter or 3 feetBarometer:measuring range from 300mbar to 1100mbarresolution 0.1mbar.Electronic compass:8- display in azimuth modeexternal magnetic field correctionaccuracy 3 resolution 1 degreeThermometer:measuring range -10 ~ +60 (units of and are optional)0.1 degree resolutionWeather forecast and time:forecast weather conditions 12 to 24 hours in advance4 weather conditions: sunny, semi-sunny, cloudy, rainy24 hour time formatElectronic backlight:5 seconds high brightness blue LED electronic backlightBattery: 2 x AAA batteries (not including)Size: approx. 9x5x2cm/3.5x2x0.8inchPackage List:1 x Altitude Gauge (Battery Not Included)1 x Hanging Strap1 x Manual