13-in-1 Solar Robot Kit: Building 13 different types of robots which can move on land and water for your child from on kit.two levels as to complexity, starting from entry level for younger child to advanced level for older child, it can challenge their manipulative skills.13 different types includes the robots moving and connecting parts. Powered By The Sun:No batteries needed, powered by the sun.The solar robot kit includes a solar power panel, the panel collects solar heat energy into an electric energy drive motor to support the machine run smoothly.Children use environmentally friendly solar energy instead of electric energy. Let children to experience and learn about renewable energy sources and have fun play with it. The robot moves in the direct sunlight and allows children to create and use their infinite imagination. STEM Educational Toys:This toys teach children how to engineer a solar power robot and help to improve logical thinking, develop manual dexterity, problem solving skills, promote children's hand-eye coordinate and creativity and the importance of teamwork or collaboration.Its perfect toy to enhance childrens Science, Technology, Engineering, Crafts and Math skills. Create By Yourself:It is easy to complete each build included in instruction manual to follow instructions.Challenging children to build different types of robots with easy-build pieces parts and accessories.It can improve child's imagination and creativity. We provide instruction to guide for 13 types robot designs in details.Suitable for for boys and girls aged 8-12.Great robot toys encourage child to learn by play. Educational Best Gifts : All pieces are sturdy and durable, which are made of premium quality harmless and non-toxic ABS plastic.This solar robot toys are a perfect way to strengthen your relationship with your kids.Great gift for birthday, Childrens Day.