First of all, I am a licensed amateur radio operator and know myself very well with technology. The radio came about Amazon Prime in less than 24 hours. The installation in a VW Polo proved very easy. Old expanded 1-DIN radio and storage compartment and installed new radio. Is Negative to mention that in which the antenna connection to the old standard Radio is installed (banana plug). So hastily brought an adapter from the Kramkiste and already was the radio betriebsbereit.Diesen adapter you get for little money on Amazon. Would be nice if this would be accompanied by even the radio. Radio reception is very good, even at me very weak incident transmitters are well received. The RDS function is very good and excellent automatic frequency switching funktiniert. MP3 CDs as well as regular CDs are read quickly, as well as USB flash drives. These must first be formatted in FAT 32 format. The Movement between folders or is very adjust easily and well with the large knob. It's all well documented in the manual. My previous speakers, I can only say .: "Who can read is a clear advantage." When I read the manual not attentive, I can not complain about the device also. For me, the radio is great in terms of price and performance and a strong buy recommendation. Only the antenna adapter must necessarily be ordered for new cars.