1.Help you relax ---- When you are bored and feel there is too much pressure, you can put it on your desk, start it up, quietly watching its fascinating turn. waste time and help relieve stress.2.Powerd Batteries --- It uses battery power to maintain it.Rotate it by hand and it will use the battery to keep spinning.Requires and will keep spinning until the battery is depleted or that you stop him.3.Educational toy --- It will be a nice desk toy.It not only demonstrates the movement of the pendulum, it also helps to show the laws of conservation of momentum and energy.Funny and useful for kids who want to learn more about science and physics.4.Well made and durable ---- Made of high quality metal and plastic, stainless steel, wear resistant, has a smooth surface, will not rust or fade.5.Best Gift --- No matter your home, living room, office or office, it would be a beautiful scenery because of its decorative and creative design.It is also a special gift for Christmas Day, the birthday, thanksgiving and other holidays.