Greenex: Scientific Robot Science Kit

Greenex: Scientific Robot Science Kit | Move your robot forward or back with this electronic kit which even moves its arms. Find out just how you can control the direction of movement both when you wire up the model and while you use it. Great fun to assemble with 25 pieces and good for the environment with no need to use batteries. Harness the power of the sun or make your own energy through movement with the hand crank generator.