I just bought this product, especially for the price. I'm not disappointed, it is very easy to install, the sound is good, the picture is of good quality. The USB allows lectuer set a key with a lot of films, which avoids habimer dvds in the car. the two screens are synchronized. I install two screens on the heads behind the driver and passenger, and there is a good view across the car (7 seater car!) Because the screens can be tilted so the 2 places in the trunk can easily see staying seated.