1,Output power: 3W 2,Built-in FM radio 3,Usb cable &Lithium battery powered 4,Small and sample ... storage devices stored MP3, WMA format music files[FM Radio] Built-in FM Radio,radio module, surrounded antenna, automatic station search, pristine sound quality, easy to ... general lithium battery b, TF card c, Portable bag d,Antenna More Detailed product pic: