The function of the car player button can be realized by the mobile phone, and the information of each function of the car player can be viewed. The operation is more concise, intuitive and convenient. Special feature: 1, the radio interface is beautiful and simple, easy to operate 2, USB ,SD player interface is intuitive and convenient, can display the current file ID3 information at the same time 3, the Bluetooth interface is convenient and fast, the song list can play the required songs at w