Whether you want to put it on your hardhat or directly on your head, the HL3 Headlamp is a great all-around headlamp for day to day use. Using our Utility Beam Optics, this headlamp produces a diffused beam best suited for up close work. With Coast's commitment to quality, the HL3 Headlamp is impact resistant, weather resistant and its LEDs are virtually unbreakable. The HL3 Headlamp is backed by Coast's lifetime warranty against defects in materials and workmanship. Tested and rated to ANSI/FL1 standards. Hard hat Compatible 100 lumen light output 5 hour runtime 39m beam distance 3 x AAA batteries (included) Adjustable elastic straps Hinged attachment to position beam Impact and water-resistant Weight: 4.4oz / 125g (including batteries)