Features: 1.The lightweight rollable piano keyboard is easy to carry, you can take with you anytime and anywhere. Kids can play the piano at home or outdoors. This is a great toy to accompany your children when traveling 2.Colorful rainbow keyboard can stimulate children's interest in piano learning and musical talent 3.The standard 49-key piano keyboard is an excellent educational musical toy, the best musical instrument gift for children and beginners 4.Rainbow piano keyboard with 14 demos, 8 tones, tone area from C3?C8, and headphone audio jack. Multifunctional keyboard will arouse children's interest in music 5.The piano can be powered by the USB cable (included). Built-in large-capacity rechargeable lithium battery allowing you to play anytime and anywhere, even outdoors specification:Item Type: Roll Up Piano Battery Type: Lithium battery 450mAh Product Size: Approx. 79 x 15 x 3cm / 31.1 x 5.9 x 1.2in PackageList: 1 x Roll Up Piano 1 x Data Cable 1 x User Manual