Fenix TK35
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Fenix TK35

by: Fenix


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The Fenix TK35 is fitted with a Cree XM-L (U2) LED to power it up to a bright 860 lumens and with four 3V CR123A batteries (Lithium) or a couple of 18650 rechargeable batteries (Li-ion) the runtimes can be more than the competition. The unit has been measured to have a runtime of 1 hour and 37 minutes when used with 18650 batteries at a power level of 860 lumens. It is also designed with a dual button switch in the tail cap to make it even more convenient to operate. You will be able to reach a maximum throw distance of 340 meters with it.


Fenix TK35 Specs

LED Brightness Level Waterproof Specifications (Width, Length, Diameter) Weight Battery
Cree XM-L U2 4output levels IPX-8 165mm (Lenght)x44mm (Diameter)x52mm (head) 273g 4xCR123A/2x18650
ANSI/FSC General Mode Flashing Mode
  Turbo High Mid Low Strobe SOS
Output (lumens) 860 365 120 15 860 120
Runtime 1h/37min 6h/48min 23h 130h    
Distance (340m)            
Intensity (29000 cd)            
Impact Resistant (1m)            


    • Cree XM-L (T6) LED with a lifespan of 50,000 hours
    • Uses four 3V CR123A batteries (Lithium) or two 18650 rechargeable batteries (Li-ion)
    • 164 mm (Length) x 43.64 mm (Diameter) x 51.5mm (Head)
    • 256-gram weight (excluding batteries)
    • Digitally regulated output - maintains constant brightness
    • Reverse polarity protection, to protect from improper battery installation
    • Dual button switch in the tail cap, convenient operation
    • Made of durable aircraft-grade aluminum
    • Premium Type III hard-anodized anti-abrasive finish
    • Toughened ultra-clear glass lens with anti-reflective coating
    • Length: 164mm
    • Diameter: 43.64mm
    • Head: 51.5mm
    • Weight: 256-gram, (excluding batteries)
    • User Manual
    • 1 x O ring
    • Lanyard
    • Holster
    • Warranty Form
  • How hard is the LED driven in order to obtain 820 ANSI lumens?
    * Yes, it can reach 820 Lumens.

    1. The efficiency of reflector is 90% now to instead of the original 87% wiHolding a Fenix tK35 in one handth 3% increasing, it means the new reflector can reflect 90% of the energy produced by LED
    2. With its high efficiency Lens

    Heat build-up: is this an issue when running on turbo @ 820 lumens?
    * Fenix design the circuit to automatically solve the problem of over heat - the light will automatically adjust its mode to a lower output after running Turbo mode for 30 minutes. The Maximum temperature for battery to bare is 80 degree C.

    Why if this light is 820 lumens is the beam intensity 27739cd so much lower than the TK50 with only 255 lumens 3126cd?
    * The light intensity has no direct relation with Lumens. It is depends on the size of reflector, the bigger the reflector is, the higher of the light intensity.
    Light intensity(Cadelas) = Lumens/Solid Angle

    What is material is the flashlight made of?
    The whole body is made of Aluminum, and the tail with a very small slide in the very back is made of plastic for waterproofing.