The toy includes 21 components can be assembled out 6 completely different style ultra-fun solar toys: hovercraft, windmill, electronic dogs, solar cars, rotary aircraft and aircraft. It is not the building-block only can be piled up but rather can move around. When the put it under the sun ,the solar panel can provide an unfailing energy supply of the toy. This product does not require screws to connect?just a simply splicing operation can assemble it into different toys ,so its operation can easier and more safety. Through this practical operation , children can learn how to use the solar energy to drive the mini motor and can also cultivate their awareness of environment protection