MK-928 61 Keys Electronic Student Musical Keyboard 61 Key Keyboard Touch Sensitive 100 Timbres, 100 Rhythms, 8 Percussions, 33 Demonstration Songs Metronome, Single Finger, Fingered Chord, Sync and Fill-in Options DC 9V power (supplied), MIDI input and output, Battery powered (6 "D" - not included) Dimensions (WxLxD) cm: 91x32x12