Features: 1. Kinetic Art Perpetual Motion: This provides a fun way to learn science, ideal for children to experience mechanical principles in educational settings or during play. It enhances their ability to explore scientific concepts. 2. Conservation of Energy: Due to air resistance and friction, the motion is not perpetual. This Newton's Law Kinetic Art Ball can move continuously for 8-15 seconds, demonstrating good torque and centroid performance. It showcases pendulum motion and illustrates the laws of conservation of momentum and energy. 3. Unique Ornament: Made of plastic, it's suitable for table decoration. This clever toy will surprise friends while enjoying the fun of science. 4. Stress Reliever: It helps adults decompress, and is great for releasing work fatigue and stress after a busy day, perfect for outer space science-themed classes or office decor. It serves as a teaching tool to explain physics. Perfect for birthday, holiday, Christmas, and Father's Day gifts. 5. Options: Yellow (USB Version), Red (USB Version), Wine Red (Battery Version). Specification: Material: Plastic Color: Yellow (USB Version), Red (USB Version), Wine Red (Battery Version) Size: 150 x 100 x 150mm Weight: 225g, 275g Package Included: 1 x Perpetual Motion Machine Decoration