The hand rolled electronic piano is a versatile and portable instrument that caters to musicians of all The built-in speakers offer excellent sound quality, and the battery-powered feature allows for uninterrupted playtime. Whether you're practicing at home, performing on the go, or teaching a beginner, this roll-up piano keyboard is an ideal choice. Features -Color:Black -Material:Silicone -Size:136.00X19.50X2.50cm/53.45X7.66X0.98in -Size:100.00X1.50X0.50cm/39.30X0.59X0.20in (USB cable) -Note: Powered by USB (included) or 3 x AA battery (not included) -Foldable design: the foldable structure makes it easy to store and transport, ideal for musicians who are always on the go -Full range of keys: this piano offers a full range of notes, suitable for various musical styles and performances -Batterypowered convenience: operates on batteries, allowing you to without needing an external power source -Comfortable silicone: made from soft silicone, the keys are comfortable to play and easy to clean, ensuring a pleasant experience -Clear builtin speaker: features a builtin speaker with clear sound quality, great for direct performance or headphone use Package list: 1 x foldable piano 1 x USB cable 1 x specification