Fenix Flashlights HP01 210-Lumen Headlamp, Yellow Max 210 lumen output from a two AA batteries will throw light 102 meters 6 outputs including Turbo-210 lumens (1hr15min), High-105 lumen (3hr40min), Medium-45 lumen (11hr40min), Low-4 lumen (135hr), SOS, red LED Simple to use two button switch and quick release battery holder IPX-6 Waterproof, 1 meters for 30 minutes Supported by limited lifetime guarantee from Fenix Lighting, US