... speaker, high end portable USB Mini speaker for mp3/mp4/iphone, Mini USB speaker ,Work with ... source with 3.5 audio interface product like : MP3 ,Computer ,mobile phone ,CD player etc, Protable ... size with room filling sound2.Single USB connector (no external audio plug) getting power from computer, built ... 3% 1W 1KHz 3.connects to Ipod,Iphone,Mp3 and most audio devices4.built-in lithium polymer ...