12-Pack Solar Post Deck Fence Cap Lights Copper Finish for 4" X 4" Post (4 1/16" X 4 1/16" (PVC/Vinyl Post)) With White LEDs and Vertical-lined Clear Lens with 3.2V 400mAh Lithium-Ion battery Solar powered lights; Charging Material: Premium Heat-Resistant Plastic 5 Ultra Bright White LEDs Overall dimensions : 5.4" (L) X 5.4" (W) X 3.5" (H); Mounting Base (Inside Diameter) : (4 1/16" X 4 1/16" (PVC/Vinyl Post)) One Pre-Installed 3.2V Lithium-Ion Battery (up to 2 additional hours of operating time) Fits on Solid Wood/Composite Posts & Deck Rails