【Solar Powered】Powered By Solar Energy, Each Windmill In The Yard Is Equipped With Rechargeable Ni-Mh Batteries, They Will Charge for 6-8 Hours During The Day and Work for 8-10 Hours When Night Falls. 【Durably-Built for Outdoors】Our Windmills for The Yard Garden Have A Solid Metal Construction With Sealed Bearings to Prevent Water From Seeping Into The Moving Parts and Cause Unwanted Water Damages. 【Solar Wind Spinner】Powered By Solar, Two Tiers Blades In The Solar Wind Spinner. As Night Falls, It Flashes A Soft, Jewel-Like Light, Bright Metal and Rgb Changing Lighting Create Visual Enjoyment In The Garden. 【Easy to Install】The Solar Wind Spinner Is Easy to Install, No Extra Wiring.Place Them In The Sunny Position, Just Enjoy Your Garden Decorations. 【Instructions Of Wind Spinner】The Instruction Sheet Is Included In The Package, Pls Kindly Ready It Carefully If You Have Any Questions About Its Usage Or Directly Contact Us.