PowerTRC&reg; Galaxy Kinetic Art Science Kit, Colors may vary Captivating physic toy - spin the cone and watch five metallic orbits Toy orbits around a small planet in the center creating a mesmerizing motion Leave this kinetic art on your desk or at home for decoration Some believe these kinetic toys can create a peaceful and relaxing time watching it spin Kinetic kit comes in a beautiful colors and will require 2 "AA" - not included