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: Altimeter Material: ABS Battery: 2 x AAA Batteries(Not Included) Features: Multifunctional, Backlight, Accurate Size: 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's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Altimeter 1 x Lanyard 1 x User Manual