USB mp3/map4 speaker 1. Excellent sound quality 2 .Many color for choose 3.Fashional shell USB mp3/map4 speaker1. Support 4GB SD/MMC ... and U disk autoplay.2. Build-in LINE inferface, connecting MP3, MP4, CD, DVD, iPod, iPhone etc..3. With FM function ... .5mm stereo audio cable, Neutral color box, Remot Control USB mp3/map4 speaker