Item Type: Electronic Perpetual Motion Toy Material: Metal, Plastic Size: Approx. 22x10.5x25cm/8.7x4.1x9.8in Power Supply Mode: USB plug in Magnetic Swing: Assemble the swing, install four AA batteries, gently move the middle part with your hand, and it will swing from side to side. It is suitable for desktop decoration, and more suitable for sending friends and relatives1EASY TO PLAY: Gently move the middle part with your hand, and the electronic perpetual motion toy will swing from side to side. 2METAL TEXTURE: The modern design of permanent motion toy is simple and delicate, with metal texture, giving visual impact. 3DESK RELAXING TOY: The perpetual motion model will attract you and anyone who sees it for a few hours, and can relax you during work. 4WIDE PURPOSE: The perpetual motion toy is very suitable for home decoration, studio or office, table decoration, etc. 5EDUCATIONAL TOY: The perpetual motion decor also applies to birthday gift for children, which is a good teaching model. 1 x Electronic Perpetual Motion Toy 1 x Base 1 x USB Cable