car mp3 FM modulators FM-14 support USB,SD card support wma/mp3 support FM transmitter uses as car adapter car mp3 FM modulators FM-14 is a classice car mp3 player ... USB port 2.0, USB driver,direct USB mp3 player etc.*support card reader too, which can ... mp3 music files.*support FM transmitter, which has FM frequency from 87Mhz to 108Mhz.*uses as car adapter.Accessories: car charger,manual book,fm ...