A good product, it works great. I was afraid of having a bad sound, but no! A sound not perfect but close the CD. A tip by cons, put the equalizer on the volume and DBB transmitter of 9 or 10, but not more, as for me, I could hear crackling when I passed 10, and change the bass level, of acute and the volume on the radio. Choose an unused preferably frequency. Works very well with a USB and SD card, I have not tried it with an mp3 player. A remote control that does not serve too saw its reach of 10 cm, but necessary if you want to change the folder with the key "PICK SONG" and "CH SET" or go directly to a track if you know what song is behind this or Such a track number, so if you have 300, it's not easy to remember ... And should still see the track number on the mini screen. In short, I put 5 stars because for me that's enough, I have a good sound with lots of songs without 20 CD in my glove, I personally do not care to change the folder or not, the small screen etc ... For that price, it's great, for those who want better without defects, it will pay more. Comes with a 3.5 jack for connecting an MP3 player cable to the transmitter, a spare fuse (to change it, simply unscrew the end of the part that branch) and the hidden instructions between two boxes at the back of packaging, a leaflet in French but not very detailed. To see in the time now.