To activate the red LED inside, attach the launching piece, wind it up, and press the top button to release - a red light spins around while it lands on the floor with a springy bounce! Dimensions: Height: 5.5 in. Width: 3.0 in. LED Colors: 1 Red Light Up Toys Bounce & Spin Top come ready to use with non-replaceable batteries. Packaging: Retail ready, individually packaged in stylized box.