Challenge kids" mechanical reasoning skills while encouraging creativity and gross motor coordination through building and movement. Boogie Buddy motorized set features 110 pieces, including a musical flashing light, disco ball, dome lights, floppy hair, oversized glasses, action mouth, pointing hands, stickers and more. Color-coding makes it easy for children to follow building instructions for three different models. They can also create their own model. Compatible with all other Gears! Gears! Gears! Sets, sold separately. Tethered motor and base stabilize model. Measures approximately 16"L x 10.5"W x 12"H when assembled. Requires 3 "AA" batteries and 3 "AAA" batteries, not included.