K"Nexosaurus rex.-Packed with 400 parts, including bricks, rods and connectors, for lots of open-ended building fun.-Handy storage tub means you can take the fun with you and clean-up is easy.-2 AA batteries required but not included.-For ages 7 and up. Includes: -Includes 200+ pieces and a battery powered motor.-Includes ideas / instructions for 20+ models or use your own imagination.