My B8 S4 uses MMI HNav and this headunit is setup to work with MMI HNav. Please check what your car uses, as there might be restrictions.

I purchased this in 2017 and it has been on my car since.

Will fit Audi A4, A5, S4, S5, B8 & B8.5. After market upgraded headunit/ android infotainment system Upgrade Android Auto. Condition is "Used"

UK RHD LHT 7" Octacore 3GB RAM Android Navigation for Audi A4/S4/A5/S5/Q5 B8, B8.5 (8K, 8T, 8R)

Just testing the waters here.The model/ brand of the headunit is called "Rsnav". Please Google, highly reputable for our cars for offering aftermarket infotainment systems. You still maintain access to your original Audi MMI system and can switch when needed. This head unit is also touch screen. Again please Google Rsnav to get full spec. You can either link with Bluetooth or insert a sim card. The system maintains all steering wheel functions, as well as all functions on the MMI joystick. Any questions please ask.

Comes with everything you need:

Installation manual

Microphone

All wires and connectors

Dispatched with Royal Mail 1st Class.