... .Can change direct 4.best quality & competitive price 2011 Popular USB mini speaker for mp3/mp4/mp5Function1.Stereo sound effect, wonderful bass, sound ... card driver and amplifer circuit needed, easy to operate5.Support for laptop, desktop, MP3, MP4, tape recorders, learning machines, radios and other ... Size520*415*420MMPCS/CTN40Gift box size200*100*100MM 2011 Popular USB Mini Speaker For MP3/MP4/MP5