Vktech&reg; Simulation Piano Toy Pre-school Music Instrument Early Childhood Education The piano with a toggle button, after switching, each key represents a classic music This is the best gift for kids to enjoy and learn music. demo function and play function can be free to switch It's a great gifts for your kids Material: Plastic, Size (assembled):21.5*18.5*12cm Battery: 3 AA batteries (not included)