Saltwater Fuel Cell Robot deals Includes 2 colorful builds

Includes 2 colorful builds

This special-edition METALLIC Dot-by-Letter includes 20 meditative scenes and four double-sided metallic markers in a detachable storage tray

Time to get things rolling

scatter blast

Saltwater Fuel Cell Robot deals Includes 2 colorful buildsBuild a sleek, modern (and adorable!) walking robot powered by salt water and magnesium no batteries required! Discover how a metal air electrochemical cell stores and discharges electrical energy using a simple saltwater solution. Explore the science of electricity, currents, and electric potential. An innovative pump mechanism provides a steady drip of salt water onto the magnesium plates and the robot walks for up to one hour on just one drop of