The Nitecore TM9K Tac has dethroned its predecessor TM9K by shining even brighter at 9,800 lumens without sacrificing size. With an increased max throw of 306 yards and aero grade aluminum body, this flashlight can survive any harsh environment Its Turbo Ready dual button design supports single-hand operation and adjusts among four brightness levels. You can also lock out the flashlight to prevent it from accidental activation when it is not in use. The upgraded ring stablizes the grip of the flashlight and prevents accidental rolling. TM9K Tac capable of quick charge (QC) technology to speed up the charging process When the light is connected to a QC power source, the battery status indicator will blink rapidly and the light will be fully charged in a little over three hours. With advanced features such as IP68 rated waterproof, advanced thermal regulation and mode memory, Nitecore TM9K Tac is a high lumen flashlight you can count on during the most precarious operation.