Feature: 1. RELIABLE TECHNOLOGY: The stirling engine model kit features 4 cylinders and a heating lamp, providing strong power. The use of magnets to hold the bottle ensures safety. The perfect combination of metal and technology guarantees reliable performance. 2. ENHANCES HANDS ON SKILLS: By engaging in hands on activities, users can observe the entire process of the stirling engine, gaining a deeper understanding of stirling principles and sparking an interest in physics. 3. WIDE APPLICATIONS: The Stirling engine model kit is widely used in children's science projects, physics demonstrations, mechanical learning, and teacher demonstrations, offering a versatile educational tool. 4. EASY TO OPERATE: The kit comes pre assembled for easy experimentation. The piston must rotate during adjustments to prevent compression, and the two connecting rods cannot be disassembled outwardly, ensuring a straightforward and convenient operation. 5. EDUCATIONAL GIFT: The Stirling engine model kit is a thoughtful and educational present for friends, family, parents, and children, combining intellectual stimulation with fun. It's perfect for birthdays and special scenes. Specification: Item Type: Stirling Engine Model Material: Stainless Steel Usage: Physics Stirling Science Teaching Model Bulb requires connection to 12V voltage. Package List: 1 x Engine Model1 x Bulb 4 x Generator Accessories