MP3 player Moulde with LCD screen , with USB & SD , remote control . Plays Mp3 and wav ... supply optional (DC 3.7V / 5V)*Built in Amplifier Optional*LCD display2.Keys function on PannelPower : Long press for stanby ,and ... over 9 , just input the numbers in series . Mp3 Player Module,usb/sd,FM,remote LCD mp3 module,8GB amplifier mp3 player ...