Motion Detection[]: When you set the motion detection mode, if there is any movement in front of the DVR, the DVR will automatically start recording. And if the DVR is shaken by any external force, such as a thief while parking, it will automatically turn on for recording. [Loop Recording]: With support for TF memory cards up to 32GB, this car recorder will automatically overwrite earlier video files when the storage space is full. Loop recording ensures that your DVR will not stop recording when the storage is full. DVR automatically overwrites the oldest files on the memory card so that it can record indefinitely. (TF card is not included in the package). [With 3 Cameras]: The car DVR has 3 camera to record, which are front camera, car inside rear view camera and rear view camera. And the camera is full HD 1080P, which can record anywhere around your car and inside the car. [Full HD Advanced Night Vision]: Our car recorder is equipped with 170 degree ultra wide angle camera lens, and the camera can shoot the maximum resolution is 1920X1080, even at night is very clear. [Intelligent Gravity Sensor]: Motion detection and parking monitoring system can automatically detect ignition, movement, collision and vibration. G sensor will save the recorded important clips in the TF card and will not be overwritten by the loop recording system.