Welcome to the fascinating world of mechanical engineering! Make 8 robotic animal characters including: a unicorn, sea otter, fox, bear, baby llama, crab, cat, and narwhal! Building and reading go hand in hand with this complete educational set of 146 large construction pieces, perfect for smaller hands. Comes with a 32-page, full-color illustrated storybook manual. Requires 2 AA batteries. For ages 5-7 yrs, from Thames & Kosmos.