Included with the Rollup Pro Piano is aDamper Pedal, AC Power adapter, 4AA batteries, instruction book, and a carrying pouch. Keyboard : 49-note keyboard, MIDI Tones: GM 128 standard, Power : DC 6V or AA x 4 battery, MIDI IN /OUT connection, Damper pedal Input (pedal included), Headphone (Speaker) out, Vibration ON/OFF, 16 song Demo, 30 rhythm patterns, Digital Volume control, Velocity: fixed at 64. The Rollup Piano is the ideal portable electronic instrument for everyone. The most accomplished artist and aspiring beginner enjoy the ability to play anywhere with this lightweight portable piano. The Rollup Piano is an affordable, versatile instrument that plays 100 different tones, including piano, organ, trumpet, harp, electronic sounds, and many more. It is the most advanced sound technology available in a piano keyboard this portable. The accomplished artist can practice anywhere with ease. Beginners can now learn to play without investing in bulky, costly, traditional style keyboards. Add excitement to any party; impress your friends and colleagues. The Rollup Piano from Hecsan will make you the star of any gathering. For the casual musician, there is the Rollup Piano, and for the professional, the NEW Rollup Piano Pro with MIDI interface.