This roll-up Piano provides portability like no other Keyboard can. Small enough to fit into a shoulder bag, you can take it anywhere. Standard 49 keys (4 octaves); new improved touch; 128 tones; percussion keys; 128 accompaniment patterns; fingered/single finger chords. Includes 30 demo songs; lesson function; midi out port; record function; sustain/vibrato effects. Ac adaptor. Suitable for beginners. 49 full -size . 128 sounds, 128 rhythms, 128 percussions. 30 stored songs. Volume control. With 4 note polyphony. Auto accompaniment. Record_playback feature. Teaching function. 1 speakers. MIDI in_out connection. Speaker_headphone jack. General information: Includes mains adaptor. Can be battery powered. Batteries required 4 x AA (included)(not included). Size H2, W100, D15cm. Weight 1.09kg.