This demonstration video discusses and shows Underwater Kinetic´s Super Q eLED Rechargeable dive light. This light is small enough to fit in your pocket, but it produces over 90 lumens of light and has a battery life of 4 hours. The battery is a rechargeable lithium ion battery which is included with the light. It has a state of the art ultra bright L.E.D (Light Emitting Diode Technology) along with Underwater Kinetic´s exclusive eLED Technology. The e in eLED stands for electronic; this means that the light burns constant for the life of the battery instead of slowly dimming. The Super Q is depth rated to 500 feet and comes in a fluorescent yellow color.