fm radio usb sd card reader speaker 1.SD,MMC,MP3 player 2.FM radio function 3.Build in lead ... *46*23 1. directly broadcast SD/MMC card,U-disk (maximum 2GB) within the MP3 format audio files.2, LCD ... by the remote control and the switch.3, applicable to MP3, MP4, MP5, MD,PC,NOTEBOOK and so on, ... , please make sure to stop charging.fm radio usb sd card reader speaker fm radio usb sd card reader speaker