... loudspeaker with USB, SD card, FM, remote control, LED display(4) loudspeaker adapt to USB, SD card, FM, DVD, VCD, CD player, ... with built-in USB and SD card reader, read MP3 music format2. volume, bass, treble control3. loudspeaker adapt to computer, laptop, DVD, VCD, CD ... perfect.3. Loudspeaker with new concept integral stereo portable mobile music, connecting your MP3,CD, DVD, PSP, mobile phone ...