Glovion Eco Solar Powered Auto Spinning Rotary World Globe Self Rotating Globe Model (5.5" inch Dark Blue) 5.5 " Inch /14CM World map Auto-rotating The product base has four solar film, the globe will automatically rotate under the sunlight ( no batteries needed), the rotation speed is determined by the intensity of the sun A good educational tool, helps students know solar energy sector but also knowledge of geography Powered by Solar energy ,no batteries or wires are needed