... 6 Demo 10 rhythms 16 tones CE,FCC,RoHS Standard 49 Keys,6 Demo Songs,16 tone colors,10 rhythms,8 drum ... Roll Up Pianois truly music on the move! You can play it anywhere and anytime!Different reasons why piano is considered ... it on a flat surface and you are ready to play.It can be rolled neatly when your fingers get ... 3.External DC input2.External phone output1.pucker function of electronic keyboard