describe:1.13 different types of robots: 13 different building robots that can move on land or water for your children to build. Two levels, from entry level for younger kids to advanced level for older kids to challenge their skills.2.No batteries required: Powered by the sun, no batteries required. The robot kit includes a solar panel that collects solar thermal energy and converts it into electricity to drive a motor that drives gears to keep the machine running smoothly. This provides your children with hands-on experience using green technology, allowing them to learn about renewable energy while having fun.3.Support STEM Education: This science toy will teach children how to design robots that use solar energy, and develop hands-on skills, problem-solving abilities, improve logical thinking, self-confidence, and promote the importance of teamwork. It's also the perfect toy to encourage young children to learn mechanical and engineering, technology, engineering and math skills.4.DIY Creation: Challenge children to build their own robots with 190 easy-to-build parts and accessories, improving childrens imagination and creativity. We've included a detailed guide to 13 robot designs, from Level 1 to Level 2, that can be easily built step-by-step as a guide. Great for boys and girls ages 8-10 and up. Great robotic toys that encourage your child to learn through play.5.Ideal Gift: All parts are sturdy and durable, made of high-quality harmless and non-toxic ABS plastic. Great Birthday Gift | | Children's Day | Christmas | Hanukkah | Easter | Science, Technology, Math | Summer Camp Activities | Back to School.Solar robot:The STEM toy robot features solar panels that are powered by the sun, creating energy and force to move the robot. No batteries required. The solar powered robot will help your children learn basic concepts about renewable energy.Unleash your child's imagination:Solar robot, children's thinking develops through challenges. In addition to 12 different construction versions, children can also build their own original robot according to their own ideas!Specification:Material: ABSPower supply: solar energyPackaging dimensions: 26 x 20 x 6.5 cmWeight: 450 gBox contents:1 x solar robot