1.Read files 2.Function--record,mp3,aux,usb,sd,tf,repeat ... powered active wooden speaker amplifier module for audio 2.0/2.1 FEATURE 1,Support MP3,WMA,WAV decode palyback. 2,American SRS(Surround ... DC 5V Battery 3.7v FUNCTION 1,Music support MP3,WMA,WAV,AUX playing. 2,Record support MIC, WAV. 3, ... FM Radio. 4,Host function. 5,USB2.0 HI-speed, compatible perfectly with USB1.1 ...