A pre-lit Christmas tree is a type of artificial tree that comes with pre-installed lights. These lights are usually placed on the branches of the tree and are typically powered by either batteries or a cord that plugs into an outlet. The pre-installed lights make it easier to decorate the tree and add a festive touch without having to worry about finding and hanging lights yourself. Some pre-lit trees come with different light options, such as multi-colored or white, and can even be controlled with a remote or through an app.