Feature:1. MULTI FUNCTIONS: Digital altimeter. This product is based on azimuth sensing and barometric sensing electronic technology. Displays full screen digital display of azimuth, direction, clock, temperature, weather forecast and altitude2. PORTABLE LANYARD: The lanyard at the upper left end of this digital altimeter can be connected to the lanyard, making this device more portable in various outdoor sports. The lanyard for product delivery make this device more convenient to carry3. WITH BACKLIGHT: Super bright backlight, you can clearly see the reading on the LCD in any environment4. FOR OUTDOOR ACTIVITIES: providing extensive and accurate information for outdoor sports enthusiasts, is an ideal and simple equipment for outdoor sports enthusiasts5. SCRATCH RESISTANT ABS: Excellent ABS material possess impact resistance, scratch resistance, environmentally friendlySpecification:Item Type: Digital AltimeterMaterial: ABSBattery: 1 x CR2032 button battery(not include).Package List:1 x Barometer 1 x Lanyard 1 x User Manual