For safety, accuracy and peace-of-mind, Coast Products customers have asked for a stand-alone tool that combines both a high quality knife with a quality, high-output light. Powered by a single AAA battery (not button cells), the LK375 is truly a two-in-one tool, a high-quality flashlight with leading-edge optics and a one-handed-opening, partially serrated knife. The light projects a beam for 174 feet (53 m), runs for 1.5 hours on high and is waterproof rated to IPX7.