Electronic Compass is based on the technology of electronic bearing sensor with the functions of bearing, direction, digital clock, digital thermometer and backlight. It is designed for outdoor use; The security clip makes the digital compass a perfect hand-carry device for various outdoor activities. Push in lower portion of carabiner to attach it to strap rucksack or clothing. http://www.chinabuye.com/multifunctional-digital-electronic-compass-with-thermometer-clock-carabiner