Funny: Simple and modern style with a lot of fun, this wheel is a rotating work of art on your desk, which can relieve your stress. Educational: Great for science or for demonstrating the laws of physics in science classrooms. Help your kids explore important values of physics. Function: With 4 AA batteries, shake the device, swing it by hand and it will use the battery power to keep swinging until the battery runs out or you stop. QUALITY: This electronic perpetual movement is made of high quality stainless steel that is safe and smooth to the touch, powered by AA batteries (batteries are not included). Gift: This globe toy is a perfect gift for your friends or family, a good craft ornament, would be a beautiful landscape because of the decorative and creative design.