Make beautiful music almost anywhere with the portable Flexible Roll-Up Piano from Mukikum. Designed for ages 6 years and older, this flexible piano keyboard features 49 standard keys, multiple keyboard tones, multiple demo songs, record & playback feature, and a built-in speaker. Can be powered by batteries or USB (cord included) so you can play anytime, anywhere! The silicon material allows the piano to roll up and travel in a backpack and runs off of USB or battery power. A fun and unique gift for kids or adults!