... connect computers,MP3,MP4 ,inphone ,PSP CD. 2:continun time:25 hours. 3:TF card ,FM easy control, 4:the bigest ... .5*40.0*50.0cmCbm / Ctn:0.085cbmG.W / Ctn:25.52kgN.W / Ctn:12.54kg Collocation:High capacity lithium ion ... digital speaker box,magic box speaker loud speaker,amplifier AHMA 999 mini speaker