3 x C (LR14) Batteries not included.
Blast off faster than the speed of light with the Hyperspeed Hangtime Roller Coaster Building Set! Use over 600 K'NEX pieces to build a Roller Coaster over 2.5 feet high! The exclusive inverted blaster motor launches your hanging coaster car on an out-of-this-world adventure through 18 feet of track! For more fun, download instructions for a 2nd coaster. Requires 3 "C" batteries (not included). Ages 9+.