Motorial Alien Robot:Elf Knights - Robotic Building Set Block Toy ,Battery Motor Operated,3D Puzzle Design Alien Primate Robot Figure for kids and adults - NanoBlocks DIY Educational Toys Use your imagination and create your own awesome Dinosaur and Jungle Robots with this Robot collection.Hours of fun for children (and parents who we are sure will not be able to resist helping). Try Loz Bigger Robots for a bigger challenge. Powered By A High Performance Motor And Will Do Some Simple Actions According To Your Instructions After you Complete Assembling It..Robotic Motorized Walking Toy Will Help Improve Children's Imagination and Creativity. Adults Love This Engineering Design, Appropriate For Every Collector. Requires 2 AA batteries (not included).Battery Operated Robot Toy Is Not Only A Toy, But Also A Good Way To Get Some Knowledge From Fun, Great For Parent-Child Relationship Strongly recommend to see the great Video at "http://www.iqiyi.com/w_19rrma5aut.html " to how fun the robot works Note:Two of them can be combined to one as the picture show.Combine all the sets in the series to create the ultimate creature, including classic rods and connectors.Hops along like a primate/Alien.Order the full set of 4 makes the robots more fun,please research ASIN:B01FSSADSM,B01FSS8IXE,B01FSS3G1I,B01F16J04E