... sound 2.3.5mm audio plug ,connects to Ipod 1.black/red colour high end portable notebook USB 2.0 mini ... speaker, high end portable USB Mini speaker for mp3/ ... , Frequency range:90Hz - 20 kHz,Output :2.5W+2.5Wm,distortion: 0.3% 1W 1KHz3.connects to Ipod,Iphone,Mp3 ... order is welcome, black/red colour high end portable notebook USB 2.0 mini speaker