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Cortex Flashlight

Adaptability is part of life for the modern day tactical professional. The Cortex Flashlight is built with adaptability in mind. Running on either three (3) Lithium CR123 batteries or two (2) AA batteries, the Cortex can utilize multiple power sources when having options is critical. With a maximum output level of 675 lumens (when running on three CR123 batteries), the Cortex provides a level of light useful for overwhelming an aggressor or identifying a threat. The Cortex also offers a strobe mode for tactical applications and a low output mode for administrative duties. Proudly built in Portland, OR.

Item # 31-001879
  • Material: Aluminum
  • Weight: 4.8 oz.
  • Length: 6.15 in.
  • LED Type: Cree XML
  • Batteries: Accepts (3) Lithium CR123 batteries or (2) AA batteries
  • Comes with (2) Alkaline AA batteries. CR123 batteries not included.


  • High Mode Output : 675 lumens
  • High Mode Runtime : 1.75 hours
  • Low Mode Output: 30 lumens
  • Low Mode Runtime : 40 hours


  • High Output : 390 lumens
  • High Output Runtime : 1.0 hours
  • Low Output: 28 lumens
  • Low Output Runtime : 15 hours
Warranty Warranty


  • 675 Lumens of Maximum Light Output
  • Omnivore Technology – Runs on two AA or three CR123 batteries
  • High, low and strobe modes
  • Waterproof (IPX7)
  • Pocket Clip
  • Tailcap Switch
  • Black Anodized Aluminum Body
5 Army & Fire Mike - OCT 6, 2015

Fantastic light. Anodized aluminum, over 600 lumens, and runs on AAs AND 123s. MADE IN THE USA. What else is there to say.

When can I purchase an Omnivore weapons light?

5 Your Title greenduck - MAY 29, 2015

I had been eyeing this light for a while and found it for a pretty good deal. Now that I have used it I would definitely pay full price. The omnivore concept is awesome. I had another flashlight that used cr123 and they can be a pia to find some times. This light has held up great these past few months in the desert and love the fact I can use whatever batteries are available. Awesome product! Now when are the omnivire weaponlights coming out?

5 Combat Medic rbbode - DEC 18, 2014

I bought this light for my deployment to Afghanistan and I couldn't be happier. This light has out-performed any other flashlight I have ever used. For the price, it is the brightest light you can buy. I have used it to light up our entire tent before. I would recommend this to anyone.

5 COMBAT MEDIC rbbode - SEP 14, 2014

I'm a medic for the Army in Afghanistan right now and this tactical light is, by far, one of the best lights I have ever used. The best that Gerber has to offer. It is extremely durable, well made, very functional, and ridiculously bright! Batteries last for as long as you'd expect with such a high-lumen output. The only changes I'd make would be to redesign the clip and make it more secure, and to make it easier to mount to a weapon system.

3 wease music kevin wease - APR 11, 2014

nice light,little too pricey for it.comparable others sell for about half

5 Far out Kiwi - FEB 12, 2014

For that price, and that power, and that many options, this is one of the best lights on the market. Stop showing off Gerber, your making the other brands blush.

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