This Classic toy seems magic, how does it do that? The Magnetic Gyro Wheel spins with great precision, even upside down. A quick flick of the wrist sends the wheel spinning down the wire, the blue wheel spins so fast it blurs. Up and over, back and forth, it is hours of magical fun; and no batteries are required. Almost 11 inches long, it's the perfect size for fast spinning fun. For ages 3 and up.