A versatile, water-resistant headlamp that features innovative Advanced Focus System (AFS) technology. AFS is a patented reflector/lens combination that allows you to focus light into a narrow beam for long-range illumination, or create a wide, circular softer beam that’s ideal for reading or navigating around obstacles in the dark. Smart Light Technology™ offers eight programmable output settings that range from an ultrabright 220 lumens able to cast a beam of light up to 210 meters, to a low setting of 30 lumens that can be seen up to 75 meters away. The headband system has an over-the-head strap for extra support. Runs up to two hours on the highest setting and up to 30 hours on the lowest. Power is supplied by the included rechargeable battery pack or four AA NiMH 1.2-volt batteries. Estimated recharge time: 4.5 hours. Weight with batteries: 11.57 oz.