Fenix Flashlights HL50 365 Lumens Headlamp, Black Extremely compact, lightweight, and durable with 4 lighting options 3 standard lighting modes and 365 lumen burst Made of durable aircraft-grade aluminum with type iii hard anodized finish Waterproof to ipx-8 standard, 2 meters for 30 minutes Can utilize aa or cr123a battery thanks to adjustable body tube that is included