... /SD 4,Pefect for MP3,TV,DVDmore mobile speaker mini speaker, computer speaker, Selling point:Extendable bass chamber: open it ... : Mobile, MP3/MP4, laptop/desktop, iPod/iPhone, CD/DVD etc.Available in any colors: red, black, white, silver ... 38mmWeight: 51g product category MINIinterfaceUSBStructure Floor-standingFunctionUse the computer speaker gifts and other promotional items Load power2.2WBass boost ...