Newtons Cradle,Balance Toy,Automatic Swing Motion Perpetual Motion Model,Physics Pendulum Science Desk Office Decor Toy

【Simple Assembly】: The silver ring rotates continuously around the central sphere. This dynamic sculpture has several brightly colored metal balls that rotate like a Ferris wheel., 【High Quality】: Use durable plastic as the base and solid stainless steel as the frame., 【Wonderful Gift】: This is a good gift. We can give it to our friends, children and family. Fashion desk toys for adults and children., 【Working Principle】: Use the principle of mutual attraction and mutual exclusion of magnets to keep the balance toy swinging, which is a symbol of eternal love., 【Magnetic Swing】: Just like a 3D globe with 4xAA batteries (not included), gently push the outer circle with your fingers, it will swing back and forth continuously, and the inner circle will also swing together irregularly.