Johnco - Salt Water Robotic Spider Kit

The Salt Water Fuel Spider Kit gives children a chance to learn about new forms of clean energy, while building and powering their very own toy spider: feed it saltwater and watch it scurry away! By putting a few drops of salt water into the fuel cell the water reacts with the metal sheets inside, powering your robotic spider and making it move it's legs up and down.

Ages: 10+