MukikiM Rock And Roll It - Piano. Flexible, Completely Portable, 49 standard Keys, battery OR USB powered. 2016 ASTRA Best Toy for Kids Award Winner! Plastic Piano is flexible so when you're done playing, you can roll it back up into its box. Portable - take it with you anywhere, even when you go outdoors! Can be powered by batteries OR USB (cord included) so you can play anytime, anywhere! Features multiple keyboard tones and demo songs, record & playback, echo/sustain, built-in speaker with volume control, and audio output 49 standard keys allows you to play tons of music without taking up the space of a large piano or keyboard Perfect for everyone from beginner to master, children to adults - rock out then roll it up!