Item Type: Electronic Dial Material: ABS Function: Weather Forecast, Altimeter, Barometer Battery Type: 1 x CR2032 Battery (Not Included) Package List 1 x Electronic Dial 1 x Lanyard 1 x Instruction Manual 1Multifunctional: Multifunctional electronic dial is an altimeter, barometer and also a weather forecasting player, 3 in 1 multifunctional design. 2Barometer: The digital barometer uses barometric pressure sensing electronics and features a full screen digital display of weather forecast and altitude. 3Backlit Display: The electronic altimeter's screen with backlighting provides a clear view of the readings on the LCD display regardless of the environment. 4Portable Design: This digital LCD altimeter comes with a lanyard for easy portability and is battery powered and used with batteries installed. 5Outdoor Supplies: The multifunctional electronic dial is the ideal easy to use gear for outdoor enthusiasts, providing extensive and essential environmental information.