Fenix Flashlights HP05 350-Lumen Headlamp Max 350 lumen output from three AA batteries will throw light 122 meters Six outputs including Turbo-350 lumens (2hr 15min), High-150 lumen (9hr), Medium-50 lumen (18hr), Low-4 lumen (170hr), SOS, and a red Led output 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