Fast delivery by Amazon as usual. Clean packaging. As far as the preliminary observations. The instrument itself has already been extensively described in many reviews. The installation in a Mercedes youngtimer was no problem, but the supplied cable set had even modified (soldered) are. But it was not a problem thanks to the manual and the information contained therein about the color coding of the cables in the cable set. The installation of the radio and the MICs also problems. The radio did right from the start what it should. The radio all about the smartphone usage in the car was purchased to improve. The pairing of the phones Motorola and Samsung G note was automated. It was surprising that not only the telephone function but also the Audiosteaming worked. However, there was initially confusion with the resumption of the connection by returning to the vehicle. The automatic reconnection takes both smartphones approximately half a minute (auto connect in the setup menu: ON!). In this phase, the messages in the radio display for an impatient users are easy to misunderstand so I initially pairing process every time again manually carried out, which is of course annoying. But this is not at all necessary if we allow the devices the necessary time for the automatic connection. It works fully automatically without any problems for BT-Audio! Speakerphone quality after readjusting the MICempfindlichkeit on MAX is good, both the callers on the other side as well in the car. Conclusion: good and recommendable.