The Casio LK-220 makes playing easy with its lighted keyboard lesson system that makes it perfect for anyone wanting to to learn how to play piano. With 61 touch-sensitive, lighted, piano-style keys, the LK-220 keyboard has 400 built-in tones, including a nice mix of stereo piano and acoustic instruments. Built-in DSP reverb effects add more depth and breadth to your self-created compositions. Other important features include 150 rhythm patterns, 150 one-touch presets, USB port, general MIDI compatibility, mic input, sampling, and a bank of 110 songs with song book. The LK-220 keyboard also comes with it's own music stand.Requires 6 AA-size batteries (not included) or optional AD-5 power supply (see item #338700).