1.TURN ON THE SWITCH , THE DISPLAY SHOW THE "LINE" 2.LED SWITCH 3.MEDIA PLAYER 4.USB 5.MIC KABEL 6.MODE BLUETOOH/MMC/FM/AUX 7.AUDIO PREV/FM CH-BUTTON 8.AUDIO PLAY/PASUE/FM SCAN 9.LOOP PLAYBACK 10.REMOTE CONTROL WINDOW 11.MAIN VOLUME : ADJUST THE MASTER VOLUME KNOB TO CHANGE THE VOLUME 12.MICROPHONE VOLUME : ADJUST THE VOLUME KNOB TO CHANGE THE MICROPHONE VOLUME 13.MICROPHONE INPUT : USE 6.5 MM PREFERRED MICROPHONE AND GUITAR