Features:Epoxy resin with high transmittance quality, hardness is 80, the surface scratches can not be avoided, but does not affect the workingUnique technology makes assembly solid and beauty can anti-snow, easy to installWithin the framework of specific techniques to avoid water freezing and deformationDescriptions:Operating voltage: 6VCurrent: 520MADimension: 145 x 145 x 3 mmPackage included:1 x 3W 6V Epoxy Solar Panel