... quality with competitive price 2.Plug and play, identify USB automatically, USB Powered and signal directly3.Full-digital processing, no ... to operate5.Support for laptop, desktop, MP3, MP4, tape recorders, learning machines, radios and other audio device 6.Simple & fashion ... 4Ω 3WProduct size(L*D*H)10*10*10cmShellplastic USB InterfaceHi-speed USB 2.0Color availablepink & white,Blue & white,Green & ...