Product features:

Built-in high-quality Hi-Fi decoder with perfect support for MP3 (up to 320Kbit/s bit rate) and WMA files
Support for USB/SD/SDHC up to 32GB (recommended up to 8GB). Operation takes place via your original car radio or steering wheel buttons: Track Up / Down, Play / Pause, Fast Forward / Fast Reverse
Connection of external sound sources possible via AUX IN using the supplied AUX cable
Memory for the last playback position, which resumes playback when the radio is switched on and off
Charging mobile devices via the USB port (~500mA)
LED status indicator and Reset button
Shock and interference resistant
Easy installation, without damage to the original parts of the car
No loss of quality or interference (as with FM transmitters) thanks to the direct connection

This interface / audio adapter supports the following Audi car radios / navigation systems:

Chorus 2 Plus
Chorus 3
Concert 2 Plus
Concerto 3
Symphony 2 Plus
Symphony 3
Audi Navigation Plus RNS-E, no MMI!
Audi Navigation RNS-LOW (BNS 5.0), no MMI!

NU are bluetooth . Pret fix !