Come and Check Our Promo Solutions.Solar powered miniature windmill. It rotates automatically when the solar panel is exposed to direct sunlight No battery needed, just a tiny motor that used the power of the sun to turn the windmill blades. It's approximately 10 1/4" high X 8 5/8" in diameter for the blade span. This makes a nice gift and a creative decoration in your room or office. It will help to promote the possibilities of renewable energy and the sun as a power source. 10 1/4" H x 8 5/8" Diameter Pls check inventory and detailed info with us before placing your orders.