If I use a 4GB memory card in the device, plays the MP3 player, as would jump at a record needle. In less 2 GB! Music misfires to a standstill. The voice command while driving is somewhat problematic, is not as well recognized. Bluetooth is detected, but both parties will hear only unintelligible sounds. Every now and then the unit switches while navigating from all but starts immediately. The 3D display is ok, I liked my predecessor, the Z 201, better. When Z 201 you could connect to the holder a TMC Kurzstabantenne, the Z 205 is the antenna in the vehicle power cable. This is thus bulkier and less flexible. Good works TMCpro!