I really like these solar disk lights. They come in a set of four. I really like how it has no wires and no batteries needed. All you need is the light from the sun. These lights are portable they are Auto on and auto off and they are water resistant. How great is that. I also noticed that they are rust resistant and that is great because we have a lot of weather changes where I live. they are super easy to install and super easy-to-use. They add a great look to any landscape. They add a great look to any place where you want to have a lighter path.