Mini speaker for mp3/mp4/mp5: 1.FM radio function 2.suport SD/USB/FM 3.Can change direct 4.best quality & competitive price 2011 Popular Design,Home Portable Laptop OEM Mini SpeakerFunction1.Stereo sound effect, wonderful bass, sound beyond size,good quality with competitive price 2.Plug and play, identify USB automatically, USB Powered and signal directly3.Full-digital processing, no signal lose ...