Mini speaker for mp3/mp4/mp5: 1.FM radio function 2.suport SD/ ... card driver and amplifer circuit needed, easy to operate5.Support for laptop, desktop, MP3, MP4, tape recorders, learning machines, radios and ... & white,Blue & white,Green & White,optional Gross Weight558g Net Weight528g Controls ProvidedVolume SpecificationsInput JackStereo Plug Output JackStereo Socket Power SupplyUSB 5V ...