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 altitude 2. 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 carry 3. WITH BACKLIGHT: Super bright backlight, you can clearly see the reading on the LCD in any environment 4. FOR OUTDOOR ACTIVITIES: providing extensive and accurate information for outdoor sports enthusiasts, is an ideal and simple equipment for outdoor sports enthusiasts 5. SCRATCH RESISTANT ABS: Excellent ABS material possess impact resistance, scratch resistance, environmentally friendly Specification: Item Type: Digital Altimeter Material: ABS Battery: 1 x CR2032 button battery(not include). Package List: 1 x Barometer 1 x Lanyard 1 x User Manual