Description: 【Education and fun】: DIY Air Conditioner Model Kit combines science and hands on production, allowing children to learn the basic principles of air conditioning while stimulating their interest in science and creativity. 【Complete material kit】: STEM Project for Kids contains all the materials and tools needed to make an air conditioning model, no additional purchase is required. It is ready to use out of the box, convenient and fast. 【Detailed instructions manual】: Wooden Kids Science Experiment Kits comes with a detailed assembly manual, providing clear and easy to understand steps. Children can complete it independently and cultivate self learning ability. 【Environmentally friendly materials】: Electric Building Project is made of environmentally friendly wood materials, and children can conduct scientific experiments with confidence. 【Improve hands on ability】: By assembling and adjusting Science Experiment Toys, children can improve their hands on ability and problem solving ability, while enhancing their confidence. Specification: 2 AA batteries (not included) Size Chart: 6cmx4.6cmx16cm/2.36inchx1.81inchx6.30inch Package Includes: 1 DIY Air Conditioner Model Kit Note: Please allow slightly errors 1-2cm differences due to manual measurement.