For Audi A4 S4 RS4 B6 B7 Android12 Car Stereo Sat Nav CarPlay Head Unit WIFI SWC
For S4 RS4. For AUDI A4 (2000-2009). You can connect your smartphone to the device with Bluetooth. With the built-in microphone and loudspeaker, you can call and answer directly from the car radio. It can also play music.