Specifications:The equipment is an ideal and simple equipment for outdoor sports enthusiasts. It provides extensive and accurate information for outdoor sports enthusiasts, with backlight, easy to read. Functions: altimeter, barometer, level meter, weather forecast, compass, thermometer, calendar, time, backlight. Scope of application: hiking, camping, mountaineering, and other outdoor places. Item Name: AltimeterMaterial: ABSBattery: 2 x AAA Batteries(Not Included)Features: Multifunctional, Backlight, AccurateSize: 9cm x 5cm x 2cm/3.54" x 1.97" x 0.79" (Approx.)Notes:Due to the light and screen setting difference, the item#39; s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes:1 x Altimeter1 x Lanyard1 x User Manual