What do you get from Fenix that rhymes with "Relay Heavenly-Live"? The TK75! Just when you thought the TK61 was amazing, the TK75 is a monster light which can produce fantastic lumen outputs, long run times, and uniform beam patterns. Not only that, but the amount of lumens we are discussing is flabbergasting. We have now gone from the 1,000 lumen mark to the 2,600 lumen mark. Hold steady as we dive deep into this uncharted realm. Almost X-Ray VisionSee Everything!It's no joke that this light can produce such a high lumen output and in fact, it is quite serious. Imagine the light from one single candle. Now add another candle and keep adding until you have an entire cathedral literally filled with shelves of lit candles until you reach 92,000 of them. Finally, condense them into one little device 7.28" in length and 3.44" in diameter. You have just created the TK75. Wield this light like a light saber as it illuminates objects hundreds of meters away, 606 to be exact. Is that a little excessive? We didn't think so either, but just in case there are some beginner flash-o-holics here, we recommend turning it down a few notches. Simply push the mode select button to choose from 1,100 lumen High mode, 400 lumen Mid mode, and 18 lumen Low mode. 18 lumens, why that is only a few more lumens then the Fenix E01 at maximum! Need to signal someone? Turn on the intense 2,600 Strobe mode so you will never be unnoticed. If you are ever lost, SOS mode burns at strong 400 lumens. DurabilitySuperior CraftsmanshipThe TK75 LED flashlight is made to fulfill the fine quality of Fenix lights. With an aluminum body that has an anti abrasive finish to prevent scratches, a lens made from tough anti reflective glass, a dual button switch system, a digitally regulated output for consistent beams, reverse polarity protection, a low voltage warning indicator that informs you of low battery charge, and a focused reflector for super long beam distances, the TK75 puts the pedal to the metal. Whew, that was a mouthful!Features: Digitally regulated output maintains constant brightness Low-voltage warning Reverse polarity protection guards against improper installation Dual button switch system for rapid activation and mode selection Made of durable aircraft-grade aluminum Premium Type III hard anodized anti-abrasive finish Toughened ultra-clear glass lens with anti-reflective coating Specifications: LED: 3 x CREE XM-L (U2) Runs on 4 x 18650 rechargeable batteries (Batteries not included) Output/runtime: Turbo: 2,600 lumens / 1.25 hrs High: 1,100 lumens / 4 hrs Medium: 400 lumens / 12 hrs Low: 18 lumens / 200 hrs Dimensions: Length: 7.28" (185 mm) Head Diameter: 3.44" (87.5 mm) Body Diameter: 2.07" (52.5 mm) Weight: 17.99oz (510g)