4M Smart Robot

Assemble your very own smart robot! Watch it speed around your house, turning left or right like magic as it bumps into obstacles. You could even make a maze to see if the smart robot can escape. Contains a top cover and base, a large axle, a metal weight, a battery case cover, motor housing, a half sphere (with switch hole) and a half sphere (without hole), motor with electric wires, screws, 1 soft plastic ring and detailed instructions.