It is considerably cheaper than the original cable from Audi, keeps the connection is reliable and stable and orderly process. For 5 star.
Unfortunately, I still have to deduct a star because the USB connector does not keep very firmly the paired device. A USB stick can fall before, which was a bit annoying already. It seems as if the USB plug is a tiny bit on the large.
Nevertheless for the price it is great compared to the Audi original accessories!