A20 is a hidden BMW Customized car dash cam. It is welcomed by many car owners due to its small size and basically does not affect the space structure of the car after installation. This dash cam follows the design of the original car and will not cause any interference to the driving vision of the road ahead during the driving of the vehicle. A20 supports 2K HDR high-definition video recording and adopts a new generation of H.264 video encoding technology, which greatly increases the download speed. After installation, the video can be watched in real time through the built-in WIFI connection APP.