Features 1. Precisely Constructed: Perpetual motion machine is simple in appearance, but the technology and design behind it are quite complex, precisely built and tested to use power to make the ball infinitely loop. 2. Relaxation: Perpetual motion machine keeps us balanced and relaxed, helps promote a sense of calm, use it to relieve stress, summon bored colleagues or teach young people about physics. 3. Practical and Interesting: Perpetual motion machine is fun and practical, suitable for children who want to know more about magnets and physics, it is a popular science game toy for children to learn physics knowledge. 4. Widely Applicable: Simple and modern design, perpetual motion machine is easy to catch kids' attention. Create elegant decor for your living room, wall, home, dining room, bar, office, hotel, and outdoor environment. 5. Perfect Gift: Perpetual motion machine can be the best gift for many events, such as housewarmings, birthdays, Valentine's Day, Father's Day, etc. It can be given to our friends, kids, family. Specification Material: Plastic Color: Brick red Size: 15 x 15 x 10 cm Weight: 288 g Package Include: 1x Perpetual Motion Machine Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia