The Fenix TK22 Ultimate Edition Flashlight is the toughest tactical torch on the market. It boasts 1600 lumens and 405 meters of throw distance, all in a 5.9 inch A6061-T6 aluminum body. You can power the TK22UE with both a rechargeable 21700 or 18650 battery. The rear switch allows for instant tactical power activation while the side switch can be used to go through the four different output modes/settings and activate the strobe option. The head of this fantastic flashlight has 3 breaking tips on its strike bezel which is made from tungsten steel with a hardness rating of HRA90. The TK22UE comes equipped with a rechargeable 21700 battery with a USB Type-C charging port. Or you can also use the ALF-18 Battery holder for your 18650 batteries. This upgraded TK22 is the best flashlight available.