Specification: Item Type: Electronic Dial Material: ABS Function: Weather Forecast, Thermometer, Altimeter, Barometer, Compass, Clock, Screen Backlight, Calendar Battery Type: 1 x CR2032 Battery (Not Included) Package List:1 x Electronic Dial (Battery Not Included)1 x Lanyard1 x Instruction Manual Outdoor Sports Equipment: Digital altimeter is the ideal simple equipment for outdoor sports enthusiasts, providing extensive and necessary environmental information for outdoor sports enthusiasts. Multifunction: Electronic dial with weather forecast, altimeter, barometer, bearing direction, clock and other functions. Premium Material: 8 in 1 digital altimeter is made of premium ABS material, durable, wear resistant and anti drop, long service life. Screen Backlight: 8 in 1 digital altimeter screen with backlight, no matter in any environment can clearly see the reading on the LCD screen. Lightweight and Portable: Digital compass altimeter is light weight, easy to carry with you when you go out, no pressure. Outdoor Sports Equipment: Digital altimeter is the ideal simple equipment for outdoor sports enthusiasts, providing extensive and necessary environmental information for outdoor sports enthusiasts. Multifunction: Electronic dial with weather forecast, altimeter, barometer, bearing direction, clock and other functions. Premium Material: 8 in 1 digital altimeter is made of premium ABS material, durable, wear resistant and anti drop, long service life. Screen Backlight: 8 in 1 digital altimeter screen with backlight, no matter in any environment can clearly see the reading on the LCD screen. Lightweight and Portable: Digital compass altimeter is light weight, easy to carry with you when you go out, no pressure.