Ideal gift for beginners: Perfect for 3D wooden puzzle beginners, making it an ideal gift for birthdays, Thanksgiving, or Christmas. No glue or tools required: Made from durable plywood with precise cuts for smooth fitting, making it easy to assemble without the need for glue or tools. Mechanical gears for fun: Features a water turbine, funnel track, gear trains, cams, ratchets, and cranks, providing an entertaining experience as the marble runs on different tracks. Enhances cognitive skills: Building the 3D wooden puzzle requires logical thinking, creativity, and eye-hand coordination, providing a relaxing and challenging activity that enhances cognitive skills. Unique decoration: Once built, the 3D puzzle becomes a unique decoration for an office or home, amazing everyone who sees it. Description: Introducing the technology small making toy, an advanced educational 3D wooden puzzle perfect for beginners. This ideal gift comes in friendly packaging, making it a great present for friends and family on birthdays, Thanksgiving, or Christmas. The puzzle is made from durable plywood with precise cuts, ensuring smooth fitting pieces without the need for tools or glue. With mechanical gears including a water turbine and funnel track, this puzzle provides hours of entertainment as you watch the marble run wildly on different tracks. Building this 3D wooden puzzle requires logical thinking, creativity, and eye-hand coordination, providing a brain-teasing challenge that relaxes the mind and reduces stress. Once completed, it becomes a unique decoration for any office or home. Item Name: 3D Puzzle Toy Material: Wood Type: Educational Educational Toys Applicable Age: 7 Years Old Battery: 2 x AA Batteries(Not Included) Features: Rolling Ball Track, Battery Operated, DIY Size Details: L: 22cm/8.66", W: 20.5cm/8.07", H: 17.2cm/6.77" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 Set of 3D Puzzle Toy