Transform a used soda pop can into a robot with a brain with the 4M smart robot kit. This kit teaches the value of recycling by repurposing a used can into a fun and functional robot with the instructions and parts included. When activated, the smart robot moves under its own power and changes direction when it encounters an obstacle. Details: Needs 1 recycled tin soda can for assembly Requires 1 AA battery (sold separately) For ages 8 years and up.