The mini 6-in-1 DIY solar energy toy is good for kids to learn how solar power generation works while having fun building things by themselves. These 21 pieces of components can form hovercraft windmill dog car helicopter astro-jet. The solar powered toys educational DIY kit set is powered by solar energy no battery required including windmill revolving plane airboat plane car and puppy. The solar powered toys educational DIY kit set is a good teaching aid to provide students with some basic knowledge about solar energy and save our earth using green power. - Build 6 different models of solar powered toy: windmill revolving plane airboat plane car and puppy - Comes with solar module and gear box - Great toy and education tool for children