The Travel Mate Digital Compass is uniquely designed with a carabiner clip that attaches to a backpack, purse, or belt loop. Featuring a digital compass, 24 Hour Style Watch and Fahrenheit and Celsius Thermometer.Additionally, the Travel Compass has a LCD lens. Feature: 1. Based on technology of electronic bearing sensor with the functions of bearing direction, digital clock, digital thermometer and backlight 2. Auto calibration when turned on 3. Display direction with degree 4. Display temperature in Celsius and Fahrenheit 5. Display time in 24 hours mode 6. Light weight. mini size, with a clip. Easy to carry 7. Note: Carabiner is only strong enough to hold compass, not for hanging other objects 8. Precaution: do not put it near Magnetic Field Equipment Descritpion: Color: Black and slivery, as show as picture Backlight color: Blue Built-in security clip Function: Compass, Thermometer, Clock Power supply: 1 * CR2032 battery pre-installed, please change it when the luminosity is too week.