... song number and volume even power cut down*With Remote control*Power supply optional (DC 3.7V / 5V)*Built in Amplifier ... in setting the Time ,Alarm , Timing swith off.3.Remote Control Keys functionPower : ON/OFF (standby )Mode : Switch order will be ... over 9 , just input the numbers in series . Mp3 Player Module,usb/sd,FM,remote LCD mp3 module,8GB amplifier mp3 player ...