The Coast HP14 Focusing LED Flashlight uses a slightly larger casing that allows for the use of the world's most common battery, the AA. With a light output of 339 lumens, the HP14 has the brightness that will light up a target as far as 175 meters (574 ft) away. Coast's Pure Beam Focusing Optic System with Fingertip Speed Focus Control provides superior beam consistency from spot to flood, with no dark rings typically associated with focusing flashlights. Our Beam Lock System easily locks in your desired beam with a slight twist of the focusing bezel. A lightweight aluminum casing offers great durability and will hold up to heavy daily use. Backed by Coast's lifetime guarantee against defects in materials and workmanship.