Overall, good value for money, but I have not overused the radio ... - The manual is somewhat succinct instructions for assembly - Apparently, I have a connection problem; the position I drained the battery after a few days without rolling. From what I saw on the Internet at the moment, it could be a history of red and yellow son reversed? Since I had already tried to climb another position (bought used) without success, there is a good chance that it comes to my car. - The setting of the stations is not super-easy - The buttons> are too small / too little accessible (research stations, tracks) For the USB key is no problem, I use a 4GB FAT32 formatted, which I've copied / pasted the contents of the "My Music" in my Windows user profile.