... make it happen!!!!360degree surround sound!!!1.IR remote control 2.FM radio 3.TF card music play back4.External speaker5 ... . It is quite different from the traditional one which base on electro-magnetic coils.It makes any hard surface play euphonious ... .7V ,600mAhOutput Power3WFrenquency Response80Hz-18KHzSource:TFcardPC,MP3,MP4,MD,CD, DVD player, Mobile phone,etc card, PC, MP3, MP4, MD, CD ...