1,mini speaker 2,digital portable speaker 3,USB battery 4,accept ... laptop ,MD,CD etc;3,USB,battery can provide power;3W dual voice built-in, frequence:80-2000HZ Power:4 ... *3W 1. 12 months Manufacturer`s limited Warranty for defective items ... -15815596229TEL:86-755-88365064 Low Price of Digital portable Speaker Mini Speaker TF Card FM Radio Line In/ Out USB disk ...