1) 4.0-inch touch screen and 4 Infrared Light: 4.0-inch touch screen playback is more intuitive, clear and delicate.have 4 infrared sensitized lamps,with high-sensitivity lens technology,excellent night vision effect. 2) Lens: Front + Inside + Rear Record:The front + inside +Rear lens is recorded at the same time, the front lens is wide-angle at 170deg, the inside and Rear lens is wide-angle at 120deg, Enjoying happy travel with families ,record all happy videos timely.Can choose a different screen viewing mode, before and after the double record ,car inside and outside the same record,large wide-angle high-definition picture quality,wider vision,driving more secure. 3)Loop Recording: When this feature is turned on, the memory card is full and the oldest video will be overwritten by the newly recorded video.However, videos under special conditions will not be overwritten, such as G-sensor, Parking Monitoring. 4) G-Sensor: When your car is subjected to an impact or other emergency, the G sensor is triggered, so that the recorder immediately records and locks the video. 5) Motion Detection: With the motion detection function is enabled, when the Car DVR detects a moving object, it will automatically start recording video. When there is no moving object, it will stop recording and detect the moving object again.