Car MP3 Player FM Transmitter with SD Slot and IR Remote -SD/MMC/USB Port/MP3
The sound quality is very poor if you are connecting a mp3 player. But is good for SD cards and USB's.  The connector is not very good so a slight touch will restart the transmitter and then you again have to set the frequency. It would have been great if the transmitter could retain the frequency setting on restart.   You cant use the mp3 player so using an SD card to an Mp3 player makes it difficult as it goes back to the start of your playlist after every restart of the transmitter. So even for stopping 