The HP14 flashlight uses a slightly larger casing that allows for the use of the world's most common battery, the AA and has the brightness professionals and serious users are looking for. A quick cycle switch allows you to select between a high output setting of 339 lumens or a low output of 56 lumens allowing you to choose the right level for your application. Coast's Pure Beam Focusing Optic System with Slide Focus Control provides superior beam consistency from spot to flood, with no dark rings typically associated with focusing flashlights, and you can lock the beam focus in any position you want with our Beam Lock System. The Bulls Eye spot beam pattern gives you a great focused spot with a maximum beam distance of 175 meters (574 feet), while producing an outer ring of flood light which allows you to see a broader area to the sides. Built tough, an impact-resistant, lightweight aluminum casing resists rust and corrosion. The HP14 also features an unbreakable LED and rubberized O-ring for reliable water resistance and durability. Backed by Coast's lifetime warranty against defects in materials and workmanship. Tested and rated to ANSI/FL1 standards by an independent laboratory.