Duncan Pulse Yo-Yo is designed to improve hand-eye coordination among the children. This yo-yo is perfect for beginners, children, collectors, and anyone looking for a fun time activity. The Pulse Yo-Yo features LED light-up technology. The light blinks and changes colors and patterns as the yo-yo spins. The toy has ball-bearing axle that ensures long spin time. This setup usually features a yo-yo sleeve with tiny metal balls inside which allows the yo-yo to turn freely. The plastic yo-yo has friction sticker technology that enables the yo-yo to return by increasing the friction on the sides.