Raised Road Stud Light is naturally charged by the sun. The 6 super bright LED’s come on automatically as soon as it starts getting dark and last for up to 18 hours. They can be seen from a distance of 800 yards. The Raised Road Stud Light is ideal for illuminating paths, decks, docks, driveways and roads with it’s IP 68 rating. It is cost effective, easy to install and require absolutely no wires or maintenance.