4M Smart Robot The 4M Smart Robot includes everything you need to build a fun and functional robot. When activated, the smart robot moves under its own power and changes direction when it encounters an obstacle. No special tools or knowledge required; the kit contains detailed instructions and all the necessary parts to let the fun begin. Requires one AA battery (not included). Recommended for ages 8 years and up. Challenge your child's imagination with 4M toys and kits. 4M educational toys cover a wide range of educational subjects and include science kits, arts and crafts kits, robotics kits, and more. 4M offers a wide range of toys and kits to let you build a clock, crochet a placemat, or turn your room into a planetarium--all in the name of making learning fun.