This building set enables younger children to create robotic canines that move through a fascinating display of gear-driven mechanics. The color-coded manual guides children wordlessly through the building of three models of robot dogs, each of increasing complexity, helping to build fine motor skills. The corded remote controls forward and backward motion, and even commands whimsical barks, growls, whines, and sniffs from the mechanical pets. More accomplished builders can assemble the 111 brightly colored pieces into creatures from their own imaginations. Includes four AA batteries. Ages 5 to 8. 7" H x 7" W x 14" L. (3 lbs.)