hree modes and strobe: - High for a bright super-bright beam: 375 lumens; 219m beam distance; runs 2.5 hours - Medium for bright light and longer run time: 175 lumens; 161m beam distance; runs 4.75 hours - Low for light without glare and extended run time: 80 lumens; 113m beam distance; runs 9.5 hours - Strobe for disorienting or signaling your location: runs 5.5 hours IPX4 water-resistant; 2 meter impact resistance tested Durable machined aircraft aluminum Anti-roll head prevents the light from rolling away when you set it down Lithium ion battery fully recharges in 3.5 hrs Clamp style charger holder with digital control circuit that prevents over-charge; LED indicates charge status PiggyBack® charger doubles your run time by charging a spare battery (sold separately) so you can keep on working; reduces down time Features a dual power input – USB port or “traditional” AC/DC charging Integrated micro-USB interface specifically designed to guide the plug into place for a secure connection USB port provides a convenient charging option using modern devices (power input only; does not charge USB devices) Grooved barrel adapts to long gun mount 5.9" (14.99 cm); 5.2 oz. (148 grams) Serialized for positive identification Limited lifetime warranty