[Focused & Energy-saving] We use a reflective lens on each bead of our solar fence post lights to make the light brighter and more intense. Unlike other post cap lights where all the light goes into the darkness and disappears, this waterproof solar light for deck fence shoots more light downward, illuminating the post, even the ground (when unobstructed).Therefore it is very suitable for installation on stairs, gardens, railings, etc. And it high conversion rate photovoltaic panels can convert solar energy into more electricity, it saves the electricity bill and is more friendly to the environment!