Solar powered.  No Wiring.  Fast and easy to install. Energy saving.  Recharged by solar panels. Light turns on automatically when dark. Super bright LED for brighter light output  .Rechargeable Ni-Cd AA battery (included).  Safe water resistant.  CE certified.  LED bulb never burns out.  Up to 10 hours of light when dark.  Corrosion resistant.  LEDs can last up to 100,000 hours.