... .For Ipod,MP3,MP4,CD,PC,Mobiles 2.Support USB SD MMC FM 3.li-battery rechargeable 4.Digital pipe display 5 ... .Direct Factory portable MP3 mini speaker with USB SD MMCWe are a professional manufacturer of all kinds of speakers ... 4.ine in:3.5mm plug5.usb powered/li-battery6.SD card slot7.USB 2.0 port8.Application:mp3/4 player ...