Electronic Perpetual Motion Toy Sacow Magnetic Swinging Balance Balls Physics Science Toys Newtons Cradle Ball

2. Easy and convenient to use 3. This is the perfect desk toy to impress Colleagues and clients alike! Perpetual Motion Desktop Toy is perfect for your outer space themed office or room decor Manufactured by Sacow. 4. It is also great for those enthusiastic about science or to demonstrate the laws of physics in science classrooms 5. A simple spin of the top of the base sets the galaxy in motion.A top seller in the space museum stores and a cool gift for the science physics enthusiast 1. Product Material: metal and plastic. Brand new and high quality