Three modes and strobe: - High for a super-bright beam: 615 lumens; 219m beam distance; runs 1.25 hours - Medium for bright light and longer run time: 320 lumens; 155m beam distance; runs 2.5 hours - Low for light without glare and extended run time: 160 lumens; 110m beam distance; runs 4.5 hours - Strobe for disorienting or signaling your location; runs 3 hours IPX4 water-resistant; 2m impact resistance tested 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 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) Durable aircraft aluminum construction ideal for law enforcement and professional use Borofloat high temperature glass lens Grooved barrel adapts to long gun mount 5.9" (14.99 cm); 5.2 oz. (148 grams) Serialized for positive identification Limited lifetime warranty