This set allow kids to build their own scientific salt water fan. The set comes with a transparent orange robot with a fan inside. The fan will operate when the engine functions. It can help kids to understand how salt water triggers the engine.

• Build your own scientific salt water fan
• Understand how salt water triggers the engine
• Learn the science of salt water engine
• Transparent orange robot with a fan inside
• Fan with activate when the engine functions
• With an eco-friendly reusable box

Requires 1 x "AA" battery, not included