37 keys piano keyboad instrument Material:silicone CE,RoHS,FCC Dimension:keyboard 264x144x6mm console 190x80x32mm ... Demo Songs, 4 drum keys,replay key, rhythm mode, tempo control mode, drum mode, dound effects mode, demo mode,lesson mode ... , volume control mode, Dimension: keyboard 264x144x6mm console 190x80x32mmN.W.:618.5g4.100 ...