With  21 components, they could be assembled out of 6 completely different style of fun solar toys. Including: hovercraft, windmill, puppy, car, aircraft, rotary aircraft, it is not the kind of foolishly building blocks, they can move! The sunlight shine on the panels to provide a steady stream of power forthe small toy. This set of toys can give a full play and train for children's imagination, creativity, and does not require screws to connect, just a simple fight inserted can complete the assembly, let the kids enjoy themself from the feeling of accomplishment . For younger children, its more operational  in practice  and securer.