Yomega Brain - The Yoyo with a Brain The Brain is the yoyo that put Yomega in the hands of millions of people all over the world. The original Yomega yo-yo with a Brain contains a centrifugal clutch system that opens on the down swing for long smooth spins. As spin time slows, the clutch engages and the yoyo comes back to the hand automatically. This often copied, never duplicated yoyo is simply the world\'s best-selling, longest spinning, automatically returning yoyo. The Brain is the best yoyo for the Beginner player, ensuring that even the least experienced player will have a positive experience. How Smart is it? The Yomega Brain Yoyo is so smart that when you throw it down, it will sleep and then remember to come back. The secret is in our centrifugal clutch system that opens to allow super long spins and then closes to force the return. This is easily one of the most popular yo-yo designs the world has ever seen! The Yomega Brain is absolutely perfect for beginners, kids, collectors, or anyone looking to purchase a great stress reliever. The Brains Anatomy: The Brain is made of durable polycarbonate, features an automatic clutch mechanism and low friction plastic bearing that deliver long spins and automatic returns. This yoyo comes in an assortment of bright translucent colors and contains a modular design, making it easy for players to unscrew the halves to untangle string knots or apply lubrication to plastic bearing. The Brain also features a see-through cap on one side that enables players to see how the clutch mechanism works. The Brain yo yo weighs 59 grams with a 2.5 mm gap width. The width of the yo yo is 35.7 mm and the diameter is 58.7 mm. The Brain contains Yomega\'s exclusive auto return system.