... 2.0 mini portable speaker for your notebook ,computer ,mp3,mp4,computer,laptop ,OME color Specification 1.RMS:2.5Watts*22 ... . 2.Universal 3.5mm audio interface. 3.Support for multimedia players.4.USB power,perfect for laptop. Selling point1.Crystal-clear ... circuit needed, easy to operate6.Support for laptop, desktop, MP3, MP4, tape recorders, learning machines, radios and other audio device 7 ...