ZHNN 10.1 inch car radio with 2GB +64GB memory features wireless carPlay/Android auto/Mirrorlink function, easily access to phone calls, music and maps. Built in GPS Navigation & WiFi, once connected to wifi or your phone's hotspot, you can download offline maps or use online maps at any time Manually Learn the Steering Wheel Control Need to manually learning steering wheel function in Settings-Car Setting-General-SWC Type-Learn Type-Enter SWC setting interface Press the icon on the car stereo's screen. A pop-up will appear, and then press the corresponding button on your car's steering wheel control. Once successful, the pop-up will automatically disappear from the screen Free Backup Camera The inclueded camera offers 720P resolution, reversing image is clearer and achieves optimal visibility no matter the weather condition Phone Mirroring Function Mirror your phone to the car screen, your phone's features such as navigation, music, videos will display on the car stereo via hotspot/USB cable. Split-Screen This car head unit supports a split-screen function, you can run two apps at the same time, such as maps and video, FM/RDS Radio With built-in FM RDS radio that allows you to listen to radio programs and stay up-to-date with the latest news during driving. Bluetooth Connection Support hands-free Bluetooth phone calls and music playing, you can safely answer the phone while driving. Wiring Harness This car radio is a universal unit, designed to be compatible with a wide range of vehicles. (CANBUS Not Included) Manually Learning the steering wheel control is needed. Settings-Car Setting-General-SWC Type-Learn Type-Enter SWC setting interface