- Belsee Best Aftermarket Car Radio Replacement DVD Player Stereo Upgrade for Audi A4 B7 B6 S4 RS4 SEAT Exeo 2002-2007 PX5 Octa Core Android 10 Auto 7 inch Touch Screen Head Unit Apple CarPlay Sat Nav Bluwtooth Wifi Steering Wheel Control$369.99• SKU: OA4. Built-in Android 10 Q system special autoradio for Audi A4 B7 B6 S4 RS4 SEAT Exeo 2002-2007 • Octa-core PX5 chip, Ram 4GB, Rom... Learn More