1.car mp3 fm modulator accept SD card and U-disk 2. ... memory disk format WMA and MP3 audio files through the car radio to listen to5With the LINE-IN function. 6Product added ... a volume control7LED digital tube display8Using car cigarette lighter socket power supply (12-24V)9Standard USB1.1 ... U Disk (USB Flash), CD, MD, MP3, MP4, PDA, PC, IPOD, DVD player.