... , for stage, shop, disco and KTV 2) USB loudspeaker with USB, SD, remote, colorful lights USB 2.0 professional loudspeakerOutput(RMS): P.M.P.O ... , voluminous bass. Description:1. loudspeaker with built-in USB and SD card reader, read MP3 music format2. volume, bass, treble control3 ... Built-in FM tuner,auto scaning,FM function with frequency range 87.5-108MHZ6,Function: Support SD and MMC card/U ...