Menus absolutely ergonomic galley and still is a pain to navigate, especially as the document is not in French and I'm not expert in English or German Technical ...
The sound during telephone conversations is horrible, but having said that the connections with fast and efficient TEL.
Can not play DVD, even when stationary with the handbrake engaged and the engine !! I checked the connections 10 times everything is good (not difficult as pin ISO with polarizing ... :))
I kept this unit one day then back Amazon ... I'll test their service ...;)