1080P Dash Cam Front and Rear View Video 4 Inch

3.【Built-in gravity sensor】: The product has a built-in gravity sensor (G-sensor). In the event of a serious vehicle collision, the recorder will lock the image data of the first 5 seconds and 10 seconds after the accident, and the lock icon will be displayed on the top of the screen; The locked image will be saved as a special file, which will not be overwritten by the loop.