Weivision Universal 360 Degree Bird View System Car DVR Record Panoramic View All Round Rear View Camera System for All Car Provide the driver a clear 360 degree bird's-eye view around vehicle 4 Super wide angle(above 170 degree) Cameras, Waterproof IP67, Night vision Universal for almost all the cars(Except long vehicle such as buses) Eliminate most of the blind spots, makes much easier for parking and passing the narrow road Seamless Splicing Technology, Auto image mosaic Perfect bird view (aerial view, round view, or panoramic view) of the car surroundings 4 Channel recording from the 4 cameras Night vision function, waterproof; The  panorama is both driving assistance system is the tachograph system,  integration of resources.Compared audio reversing radar, more intuitive  security, the traffic, parking, raised to the highest level of safety; 360-degree panoramic imaging system parking. The  system will automatically start recording when the car ACC ON, with  loop recording for every 3 minutes. For a 16GB Card can last about 20  hour. When  the car is ignited and the monitor doesn&#039;t show the video from the  cameras, the system will record in the background. The bird view and the  front view will be recorded. When  the car is ignited and the monitor is showing the video from the  cameras, all the scenes displayed on the monitor will be recorded. ( It  could be the bird view and one view of left, right, front, or rear  view). There will be an USB interface with the system which can be used to connect a PC to copy data from the card.