✅ 【Sincere After-sales Service】---Customer satisfaction is our eternal pursuit. We offer unconditonal replacement if you encounter any problems. Please feel free to contact us. We'll exert ourselves to satisfy you. ✅ 【Great Gift Robot for Kids】---A perfect gift for kids or students 8 years old and up on birthday, Christmas, Children's day or any other holidays. It also provides a nice opportunity to strengthen parent-kid relationship by working together building model and running it in the sun. ✅ 【Solar Powered Bots】---No battery needed! All models can be drived by exposing the solar panel under direct strong sunlight. From this science experiment kids could learn clear green-energy concept and understand more profoundly that technology plays a great role in environmental protection. ✅ 【Educational STEM Robot Building Kits】---Every single part needs to be assembled by yourself, which make a true STEM experience. Sillbird science robot kit is also a perfect toy to encourage learning of mechanics and engineering in young children,enhance your children's Science, Technology, Engineering, and Math skills. This process will keep kids occupied and entertained for hours, help improve children's concentration and patience and sharpen their brain. ✅ 【Coolest 12 in 1 Robots Toy Sets】---Can be built into 12 models: turtle, walker, quad, row, beetle, puppy, buggy, crab, slither, roly-poly, zombie and surf. Fulfill kids' curiosity and exploration desire about diverse animate beings in biosphere.