The S1+ is a portable car DVR that records video in 1440x1080 (1080i) high definition. As well as recording proficiently in the daytime, the camera boasts outstanding low light recording. It also features a built-in 2.5-inch TFT LCD screen, making it easy to review your recorded videos and photos. When an impact occurs or if the emergency brake is used, the camera's G-sensor protects the previous, present and upcoming video files automatically so they do not get erased by loop recording. The S1+ starts recording as soon as you turn on your vehicle and also features manual file protect and motion detection functions.