Kinetic Light Newton’s Cradle from ThinkGeek

-A futuristic take on this classic desk accessory -Designed and manufactured by ThinkGeek -Bright, multicolor LEDs in each sphere -See the laws of conservation of mass and energy expressed in color! -Programmed with three lighting modes - flash, fade, color cycle -Materials: Plastic, wire, LEDs, frosted glass -Batteries: 6 AA alkaline batteries (not included) -Some assembly required (no tools - just popping the rails in place) -Dimensions: 7“ wide x 6“ deep x 7 3/4