Features 88 Keys standard piano Sustain and vibrato functionDigital display Master volume control key tempo control key Auto sleep mode Midi Out USB 5V power adapter 128 kinds of tone 128 kinds of rhythmsSustain pedal 14 demo songs Earphone speaker output interface Mode selection key tone and rhythm Power supply Recording programming and playback function 1 by USB 5V power adapter Demo songs play tutorial function 2 by built in 1100mA li ion battery ●Start stop insert function key 3 by 4 AAA battery●Piano Drum kit function Built in lithium battery without AAA battery compartments Package included 1 x Roll up piano1 x USB cable1 x EU plug1 x Bag1 x Manual Click to download the English manual