11. Built-in carplay system: connect compatible for Apple mobile phones, access mobile phone address book, mail, notification, map navigation, music, video and other information, realize voice control. 22. Built-in Bluetooth function, can connect to mobile phones, hands-free calls, safer driving, Bluetooth music playback. 33. Fm radio: You can listen to real-time road conditions, news broadcasts, weather forecasts, etc... 18 kinds of Fm receiver preset storage functions. 44. Support steering wheel control function: use the car steering wheel to quickly switch the functions you want, which is more convenient. 55. Support reversing rear view system: if connected to the car reversing camera, the car stereo display will automatically turn to the rear view reversing details to help the driver to park safely. 66. Aux audio input interface supports external MP3, mobile phone, music player, etc. 77. Rca audio output. (L out R out)