Fenix Flashlights HL55 900 Lumens Headlamp, Black Max 900 lumen output cast a wide beam while still throwing a 381ft (116 meters) distance Five outputs including a turbo mode of 900 lumens Made of durable aircraft-grade aluminum with type iii hard anodized finish Waterproof to ipx-8 standard, 2 meters for 30 minutes Uses one 18650 rechargeable li-ion battery or two cr123abatteries (not included)