Put this robot mini vehicle together, then add salty water to the power compartment and off it goes! No batteries required. It's amazing! 

• Hands-on learning experience that illustrates the value of alternate energy sources and robotics.
• The robot is powered by the chemical reaction of salt water and charcoal, and is safe and non-toxic
• Kit contains all the parts and materials needed to create a salt-water powered robot
• Detailed assembly instructions included.
• Recommended for ages 8 and up