The Finger / Utility light uses a high intensity ultra bright White LED with an expected lifetime of at least 100,000 hrs. It is the most useful Flashlight you will ever own. Putting light at the end of your finger or any tool you have in your hand. If you have ever tried to use a tool in a dark corner just put the light right on the tool. Screwdrivers, wrenches scissors and place where you need extra light.