4 colors can choose:black,silver,blue,red,fine metal                         
1.built-in lithium battery              
2.support TF card        
3.2.with FM function                                
4.The  function of remote control
5: input out power : DV 5V±0.5v
built-in lithium battery capacity : 3.7V 600mAh
6.output power : 3W
7.Frequency Response: 80Hz-18KHz
Audio sourse: FM radio.TF card, PC, MP3, MP4, MD, CD, DVD player, Mobile phone, etc