Williams Legato 88-Key Digital Piano 88 semi-weighted keys, 5 rich sounds: piano, electric piano, organ, synth and bass. Battery operation: 6 x D-cell 1.5V batteries. Convenient, built-in metronome Built-in speakers, Stereo/mono line out jacks, USB MIDI connections. AC Power adapter, Sustain Pedal, Batteries, Stand or bench are Sold separately