... , stereophonic frequency modulation FM,UP-to-Date 1.LIne -in Function , can be connnected notebook, mp3, mp4, iphone ... 1450m AH high capacity litium ion battery;4,all in one inter face for all functions;5, play back ... , last more than 20 hours;6, Built -in TF CARD slot optional Nand flash provide big compacity ... to store music or files ;7, LED signal for full sunctions;8, Higt -speed USB ...