... battery recharging 2. Can play MP3/WMA music fromat audio files of TF card , FM function (frequency range ... :87.5-108 MHZ) Card reader function, audio line in and earphone audio output function. 3. Press"MODE" button for ... sources from mobile phone ,MP3,MP4,PC and other audio devices. 6. Variouse color are available 7. Enjoy ... Stereo 3.5mm Li-ion Inout: 3.7v,300MA 12. Li-ion outpur:4.2v,+/-0.05v 13. USB ...