Multifunctional digital altimeter is designed to deliver extensive, accurate and vital information with an altimeter, barometer, thermometer, compass, weather forecast and time display. The gadget is the ideal companion for outdoor enthusiasts, it features six functions including digital altimeter, barometer, thermometer, compass, weather forecast and time. All functions are displayed on an LCD screen with super bright LED backlight. It is very easy to use, and easy to carry by using the strap included. http://www.chinabuye.com/6in1-multifunctional-digital-altimeter-with-barometer-thermometer-compass-weather-forecast-time