... 3.Rechargeable battery 4.Support U-disk music play Display screen mini car speak with USB/TF/FM RadioSpecification ... with U disk and inserting Micro SD card, MP3 format music - PC, laptop, computer, MP3, MP4, mobile ... charging - Press mode switch change different mode between music play, Speaker and FM radio - When the speaker ... N-F11 car speaker with TF usb music play mini speaker for computer FM radio