HD 1080P Video: This dash cam records full HD 1920*1080p video so that clear video evidence can be provided to police and insurance institutions when needed, making your life easier and safer. G-Sensor: When a serious vehicle collision occurs, it will lock the recorded video of the accident occurred and save it as a special video. The locked video will not be covered. Loop Recording: Automatically overwrite the previous recordings with new files except for locked files when the memory card is full. Powerful Functions: Motion detection and parking mode, it powers on and off with the engine and you'll get the video footage in the case of a hit-and-run or vandalism incident while parked.