This is the Salt Water Fuel Cell Monster Truck Kit from OWI®. Suitable for Ages 13 & Older. Skill level: Intermediate Experience FEATURES: Powered by salt water and fueled by creativity Salt Water Fuel Cell kit gives children a chance to learn about new forms of clean energy, while building and powering their very own toy After activating the fuel cell module with a saltwater mixture, the magnesium metal sheet (3 sheets included) can operate the car for about 5-7 hours continuously No batteries required, just add salt water Easy to take out the Fuel Cell module when not in use Detailed assembly and operation guide INCLUDES: One Salt Water Fuel Cell Monster Truck Kit REQUIRES: Assembly tlc 5/10/12