... bass 2.0 pro loudspeaker(3) professional loudspeaker with USB, SD card, FM, remote control, LED display(4) loudspeaker adapt to USB, SD card, ... 2.0 professional loudspeaker.(6) USB professional loudspeaker with euphonious alt, sweet mediant, voluminous bass. Description:1. loudspeaker with built-in USB and SD card reader ... range 87.5-108MHZ6,Function: Support SD and MMC card/U disk , FM function, LED ...