Features two lighting modes: Constant on and THRO (Temporarily Heightened Regulated Output) mode for maximum brightness 300 lumens; 69m beam; runs 3 hours THRO: 1,000 lumens; 110m beam; 35 second burst Thin, ergonomic design fits comfortably in your hand and provides clean pocket carry Grooved for a sure grip Rotatable switch with battery level indicator Deep carry pocket clip attaches on either side of light USB-C rechargeable Lithium polymer battery charges in 3 hours Durable, anodized aluminum construction; tempered glass lens IPX7 waterproof to 1m; 1m impact resistance tested 5.46 (138.7 mm); 3.3 oz. (93.5g)