This is a portable and user friendly Standalone Surveillance System accompanying driving. Just simply plug into the cigarette lighter socket and place it on the windshield. Free to adjust to adapt the compartment environment well. Now you have one all time guard which is able to record the visual conditions of the road, weather, and traffic directly from your windshield with at least 16 hours of constant video on a removable SD card up to 32GB. http://www.chinabuye.com/car-vehicle-camera-dvr-black-with-cycle-recording