Share your passion for music and puzzles with the DIY 3D Music Box Puzzle Magic Piano 223 pcs. This wooden puzzle is an intricately, whimsical piano, plays by itself! This mechanical music box works with a complex moving gears structure, so no batteries are required! Once built, just wind up the magical piano elegant keys will play a beautiful melody. This magic piano is makes for a perfect gift or elegant decoration for your home! | 3D Puzzle | | DIY 3D Music Box Puzzle Magic Piano 223pcs | Best Buy