The Duncan Toys Pulse Yo-Yo features a durable polycarbonate body with LED light-up technology. The LED lights inside pulse, blink, and change colors and patterns as the yo-yo spins. The toy has ball-bearing axle that ensures long spin time. Used by world champions! Duncan intermediate yo-yos are carefully designed to provide long spin times and quick, controlled returns. Perfect for kids, collectors and anyone looking for an exciting hobby. Whether you are shopping for your child or for your own inner child, at Duncan we believe that our toys will help you find your inner fun.