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 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 contains:1 x 8 in 1 digital altimeter. Note: 1. Please allow a little error due to manual measurement. Please make sure you don't mind before bidding. 2. Color may vary due to different monitors, please understand. Hello, please pay attention to your delivery address when purchasing products. If your delivery information (such as name, street, house number, doorbell/mailbox without name, etc.) is incorrect, the order will not be delivered correctly.)