Newton's Cradle Perpetual Motion Balance Balls Desk Toy Home Decoration

Specification: Item Type: Perpetual Motion Material: Plastic Battery: 4 x AA Battery (Not Included) Height: Approx. 22.5cm / 8.9in Diameter: Approx. 17cm / 6.7in Weight: Approx. 227g / 8oz Package List: 1 x Perpetual Motion • 🌸【Interactive Fun】Swing it by hand to keep this newtons cradle rocking around with battery power, providing an interactive and entertaining experience. • 🌸【Educational Device】This perpetual motion machine is an excellent educational and science device stimulating interest in physics and exploration, fostering a love for science. • 🌸【Colorful Rotating】This swinging toy has brightly colored balls that rotate like a sky wheel, adding a vibrant touch to any space. • 🌸【Elegant Design】The pendulum balls feature an elegant and innovative design, ideal for festivals and office desk decoration, making it also a beautiful gift. • 🌸【Intelligent Art】This newtons cradle balance balls adopt novel design for children to have fun, doubling as a piece of revolving art for your desk, combining entertainment and aesthetics.