... powered loudspeakers,long time play2.With line in function,can switch-in Notebook PC,MP3,MP4,Ipnone etc.. ... new technology Class D,Nice acoustic fidelity6.Build-in flash memory,can storage large quantity music and ... data7.Full function All in One port design,All external using single port8. ... is a mini sport speaker,you can grasp in hand or put into your pocket to listen music. ...