Mini speaker for mp3/mp4/mp5: 1.FM radio function 2.suport ... card driver and amplifer circuit needed, easy to operate5.Support for laptop, desktop, MP3, MP4, tape recorders, learning machines, ... FeaturesSpeaker unitsIron 53mm 4Ω 3WProduct size(L*D*H)79*92*87mmShellplastic USB InterfaceHi-speed USB 2.0Color availablepink & white ... 2011 Popular Design,Home Portable Laptop OEM Mini Speaker For MP3/MP4/MP5