Feature: 1. Wide Range of Applications: The perpetual motion machine has a wide range of applications, such as children's science projects, physics and mechanical learning, teacher classroom demonstration props, birthday gifts for friends, family, parents, children. 2. Continues to Move: The perpetual motion machine toy continues to move in perpetuity until the battery is depleted. 3. Dynamic Art Decoration: This electric ferris wheel toy is an excellent decoration for dynamic art at home, school or in the office. 4. Coping with Stress: Use the perpetual motion machine to kill time, relieve stress, call out boring colleagues, or teach young people about physics. 5. Product Material: Perpetual motion machine desk toy is made of ABS plastic and metal, fine workmanship makes it durable, not easy to damage. Specification: Item Type: Perpetual Motion Machine Product Material: Plastic, Metal Product Process: Electroplating Color: As Pictures Shown Weight: Approx. 248g / 8.7oz Battery: 4Pcs AA Battery (Not Included) . Package List: 2 x Ornament2 x Bracket2 x Connection Frame1 x Base