Car Dash Dashboard Camera Cam Accident Recorder DVR Records video and audio in continuous cycle. The period of each clip is about 10 minutes. On-screen real time clock backed by internal lithium-ion battery No extra battery is required. As long as the car power adapter is connected, the camera will automatically start recording once your car is turned on, Integrated laser pointer indicates which point you are recording Compact design with windshield suction cup provides better view And will keep recording for about 20 seconds after your car is shut off New clip will loop over the oldest previously recorded clip automatically when the memory card is full