Features and Benefits: "High, medium and low modes plus strobe: High for a high lumen beam: 1,200 lumens; 335m beam; runs 1.75 hours, Medium for bright light & longer run time: 460 lumens; 200m beam; runs 5.5 hours, Low for extended run time: 120 lumens; 110m beam; runs 12 hours, Strobe for disorienting or signaling: runs 3.5 hours; Intuitive mode switch for easy selection of high, medium, or low. ""Set and forget it"" - no need to cycle through the settings to get to the desired mode; One-handed operation of momentary, constant on, or strobe mode using either switch; Lithium-ion battery with on-board safety control circuit, rechargeable up to 1000 times; 6000 series machined aircraft aluminum with anodized finish; LED charge-continuity indicator on charger base; IPX7 waterproof; 2m impact resistance tested;