It is a lightweight and multifunctional device for outdoor use The backlit digital display is designed for easy reading of data Thermometer: Celsius / Fahrenheit degree; clock: in 12 hours or 24 hours format 8 in 1 function: digital altimeter, with digital barometer, digital compass, weather forecast, time, calendar, thermometer Altimeter: -700 to 9000 m / -2300 to 29500 ft. Weather forecast History height record: 256 pcs records; compass: display bearing in degrees and cardinal point Feature: The device is based on the technology of the electronic bearing sensor and the barometric sensor. 8 in 1 Function: Digital Altimeter, with Digital Barometer, Digital Compass, Weather Forecast, Time, Calendar, Thermometer and Backlight The digital altimeter is designed for outdoor use, the detachable cord makes the digital compass a perfect hand carry device. for various outdoor activations and gives you backlight when you press any button. Specifications: Calendar. Backlight. Weather forecast Weight: 70 g. Dimensions: 90 x 50 x 18 mm. History Record Record: 256 Pieces Vinyl Records Altimeter: -700 ~ 9000 m / -2300 ~ 29500 ft. Compass: show the path in degrees and celestial direction. Thermometer: in C / F format. Clock: in 12 hours or 24 hours format. Battery: 2 x AAA batteries (battery is not included). Package includes: 1 x 8 in 1 digital altimeter. 1 x rope. 1 x English manual. Feature: The device is based on the technology of the electronic bearing sensor and the barometric sensor. 8 in 1 Function: Digital Altimeter, with Digital Barometer, Digital Compass, Weather Forecast, Time, Calendar, Thermometer and Backlight The digital altimeter is designed for outdoor use, the detachable cord makes the digital compass a perfect hand carry device. for various outdoor activations and gives you backlight when you press any button. Specifications: Calendar. Backlight. Weather forecast Weight: 70 g. Dimensions: 90 x 50 x 18 mm. History Record Record: 256 Pieces Vinyl Records Altimeter: -700 ~ 9000 m / -2300 ~ 29500 ft. Compass: show the path in degrees and celestial direction. Thermometer: in C / F format. Clock: in 12 hours or 24 hours format. Battery: 2 x AAA batteries (battery is not included). Package includes: 1 x 8 in 1 digital altimeter. 1 x rope. 1 x English manual.