Build your own army helicopter and have fun with the spinning and patrolling all powered by a solar panel!
The Greenex Series is 100% battery-free eco learning fun that connects the environment
to amazing science experiments.Smartly designed, each Greenex kit allows kids to snap the
pieces together with ease. Simply snap all key components and modules together to start
and then pull apart once finished. Encourages kids to experiment on their own for
additional learning. Best of all, each kit can snap to another to integrate functions and double (triple, quadruple) the fun!