Roll-up Piano - Digital Portable 49 Keys Rollup Electronic Music Piano MIDI Keyboard 100% brand new & Ready to Ship 49 Standard Keys Full Size Keyboard , 5 Octaves, 100 Tone Reportoire, 100 Background Rhythms, 34 Demo Songs Built in Speaker with Volume Control + Plug in jack for earphones or external speakers Record and Play Back Functions + MIDI Functions Includes: AC Adaptor, Carrying Case & Instruction Manual. 4 AA Batteries Required.