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Fenix TK41 U2 updates the popular 8 x AA powered TK41, offering a useful performance increase with maximum output raised from 800 to 860 lumens. TK41 U2 features 4 lighting plus 2 signalling levels, dual switch system, the addition of a Cree XM-L U2 LED, and offers easy, ergonomic operation plus a stunning beam reach of 486 metres, perfect for search applications.

The dual switch system falls comfortably under your thumb for easy operation, with the right button switching the torch on/off with a single press, and cycling between constant output or signalling modes with a quick double press. The left button cycles between levels in each mode.

TK41 U2's four widely spaced constant lighting levels offer a balance of output and run time to suit your task, from an intense 860 OTF lumen beam for 2 hrs 19 minutes, to a low of 15 lumens for 10 days emergency run time (Ni-mh AA rechargeable batteries, not included) plus emergency strobe and SOS modes, should you need them.

Fenix TK41 U2, awesome power from regular AA batteries.

Model Fenix TK41 XM-L U2
Battery Type 8 x AA
Power Levels 4 plus SOS and strobe
Operation Dual switch: (left brighness button - right on-off-mode button)
Output Max: 860 lumens - 2 hrs 19 mins / Min: 15 lumens - 240 hrs


  • Uses a Cree XM-L U2 LED with a lifespan of 50,000 hours

  • Uses eight 1.5V AA (Ni-MH, Alkaline) batteries

  • Four constant light levels (ANSI out the front lumens) 860 lumens (2 hrs 19 min), 365 lumens (7 hrs 43 min), 120 lumens (27 hrs), 15 lumens (240 hrs) plus strobe (860 lumens) and SOS (120 lumens), tested to ANSI /FSC standard using 2500 mah AA Ni-mh rechargeable batteries

  • 214mm (Length) - 40mm (Diameter) - 62.5mm (Head)

  • 320-gram weight (excluding batteries)

  • Digitally regulated output - maintains constant brightness

  • Reverse polarity protection, to protect from improper battery installation

  • Neck mounted Dual Switch System, easy operation

  • Made of durable aircraft-grade aluminum

  • Premium Type III hard-anodized anti-abrasive finish

  • Toughened ultra-clear glass lens with anti-reflective coating
  • Retail packaged Fenix TK41

  • Lanyard

  • Spare o-rings

  • Instruction manual

  • Warranty
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