... Spectrum with balance display, support USB/SD, MP3, FM radio, remote control, with left & right LED display. This ... StaffProduct Line: mini Card& USB reader speaker, portable FM radio speaker, mobile speaker, active speaker, tower speaker, stage ... speakerRemarks: 1) More new designs are on the way 2) We do best service to every customer, the ... with us. R&D,mp3 decoder board for sd, usb,fm radio,LED