... speaker, bluetooth speaker,USB speaker 1.Recharge: USB charging, USB download charging, independent charging.2.compatible with CD player,PC/MAC ... ,MP3 player,MP4 player, DVD player3.Mute function4.suitable for: Ipod, Sony Ericsson, NOKIA, SAMSUNG mobile phone,MP3 player and ... I-pod docking and four pieces I-pod backrest, Extra for four kinds of mobile phone docking , add USD3.00 Box ...