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Fenix TK21 XM-L U2 features an intense 468 lumen beam (1 hour 50 minutes run time ), four levels of output plus strobe and a convenient side mounted mode switch for brightness/strobe selection. The highly efficient Cree XM-L U2 LED provides impressive run times at all four output levels whilst delivering a reach in excess of 200 metres, combined with powerful spill lighting to safely illuminate your surroundings.

TK21 can be powered by 2 x CR123A batteries or 1 x 18650 Li-ion rechargeable battery and offers simple operation. Switch on the light using the momentary/constant-on tail cap pushbutton, then cycle output levels using the side dimmer button. Your chosen level is memorized, meaning your the TK21 will always activate at the last used output (except strobe). Strobe mode can be quickly accessed by a continued press of the mode button.


Model Fenix TK21 XM-L U2
Battery Type 2 x CR123A / 18650
Power Levels 4 plus strobe
Operation Side button mode switch / tail cap on - off - momentary switch
Output Max: 468 lumens - 1 hr 50 mins / Min: 5 lumens - 220 hrs


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

  • Uses 2 x CR123A 3v lithium batteries or 1 x 18650 Li-ion rechargeable battery

  • 5 types of output: 5 lumens (220 hrs), 58 lumens (16 hrs), 180 lumens (5 hrs 10 min), 468 lumens (1 hrs 50 min), strobe 468 lumens, tested to ANSI /FSC standard using CR123A non rechargeable batteries

  • 150mm (length) x 25.4mm (dia) x 40mm (head)

  • 152.6 - gram weight (excluding batteries)

  • Digitally regulated output - maintains constant brightness

  • Reverse polarity protection, protects from incorrect battery insertion

  • Push button tail switch with momentary-on function

  • Push button mode switch with memory function

  • Made from durable aircraft gade aluminium

  • Premium Type 111 hard anodized anti - abrasive finish

  • Toughened ultra-clear glass lens with anti-reflective coating
  • Retail packaged Fenix TK21

  • Removable tactical grip ring

  • Lanyard

  • Holster

  • Spare o-ring

  • Spare rubber switch boot

  • Instruction manual

  • Warranty
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