The Smart Solar Solar Rock Light is a natural way to highlight your landscaping or light up your garden path. These solar lights are shaped like rock to blend into your landscaping by day and illuminate automatically at night. Smart! The rock has an integrated solar panel that means there are no wires to fuss with. Your rock harnesses the power of the sun to allow its single, bright white LED light shine. It includes a replaceable and rechargeable Ni-MH battery.