Rock out, then roll it up! Rainbow colored, flexible, completely portable piano by MukikiM with 49 standard keys. The keyboard features multiple keyboard tones, demo songs, realistic sounds and a record/playback feature. It includes a play by color song booklet. Powered by USB cord (included) or 4 AAA batteries (not included). Build in speaker with auxiliary capabilities to use with an external speaker or headphones. Completely portable - take it with you and play ANYWHERE! Power saving mode activates when not in use.