Streamlight 3AA HAZ-LO is an intrinsically safe and safety approved LED headlamp - safe for use in hazardous environments (industrial, utility, oil, gas, mining, etc). Now the Streamlight 3AA HAZ-LO headlight is now brighter than ever with 120 lumens and a measured beam range of 541 feet. The Streamlight 3AA HAZ-LO headlamp is made of impact resistant resin offering exceptional durability and weather resistance. All openings are O-ring sealed. The Streamlight 3AA HAZ-LO headlamp runs for 11 hours on 3 each AA alkaline batteries. Streamlight 3AA HAZ-LO headlamp includes both adjustable cloth headstrap and rubber hard hat strap.