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Knog Big Cobber Rear Light

Knog Big Cobber Rear Light

Mfg PartNum:12192
SALE: $80.06
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Be seen from all angles.

Big Cobber produces an incredible 330° of light, so you'll be clearly seen from all angles. In an increasingly busy world, this bike light is brilliantly effective at attracting attention and helping keep you safe on the road. Packing 270 lumens this Big Cobber is seriously bright.

The Cobber has integrated USB recharging, is 100% waterproof and you can program the settings using Modemaker.


  • Light Modes: Max, Mid, Steady Pulse, Flash, Rolling Flash, Side Flash, Disco Flash, Eco Flash come pre-programmed.
  • LEDs: Efficient Chip on Board (COB) LEDs designed to provide maximum brightness level for up to 90% of the battery burn time for each mode.
  • Integrated USB Plug: No charging cable required, plugs directly into USB ports & is designed to be exposed to the elements
  • Charge Time: 5.5 hours (LED will turn off when fully charged
  • Bike Attachment: Tool-less removable silicone straps for bars/seat posts 22 - 32mm+ diameter with magnetic mount. Aero Mount also included.
  • 100% Waterproof: The Cobber is 100% waterproof against all elements
  • Battery: USB Rechargeable Lithium Polymer
  • Accessories Included: Standard Mount, Aero Mount, 3x interchangeable straps for bars/seat posts 22-27mm / 28-32mm+, and USB extension.

  • Runtime
    Modes Lumens Runtime (hrs)
    Max 160 2.0
    Mid 60 3.5
    Steady Pulse 270 2.59
    Flash 270 6.5
    Rolling Flash 110 5.5
    Side Flash 170 2
    Disco Flash 140 5
    Eco Flash 15 100

    B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Light Type: Rechargeable 

Dimensions: H:92mm x W:33mm 

Weight: 59 g

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Reviewed 9/19/2020
Cycling Enthusiast
Value Rating
Overall Rating
Does not hold charge and light has short life. Overpriced

Have used this light for less than 6 months riding in southwest. The charge lasts less than an hour even after following manufacturers instructions. Light no longer works even after full charge. This is poorly made overpriced product that I regret buying

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Reviewed 8/7/2020
by Anonymous
Cycling Enthusiast
Value Rating
Overall Rating
Best rear light!

This is the absolute best light for an aero bike. Get a decent 5-6 hours out of a charge using the mode that slowly flashes around the whole light radius.

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Reviewed 4/13/2020
by Anonymous
Cycling Enthusiast
Value Rating
Overall Rating
Outstanding Light

First, this light is huge, and can seen from the back and sides. I love the attachment mechanism - it stays in place and is easy to mount and un-mount. I have owned a number of Knog lights over the years and this is on par with those. Put another way, if you like other Knog lights you'll probably like this one as well. It's a little pricey, but can you really put a price on being seen? Worth every penny in my opinion.

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Reviewed 1/16/2020
by Anonymous
Cycling Enthusiast
Paris, TX
Value Rating
Overall Rating
Bight Light. Highly Effective.

I give this light a split star rating. Five stars for the light itself. The light is very bright and well seen from the side and rear. I gave it a four star rating due to the attachment system which is a rubber band. I would prefer a clamp, but it has not been a problem on the gravel roads I travel. Easily charged with the supplied cord or a direct plug into a USB port.

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Reviewed 12/30/2019
by Carol
south Florida
Overall Rating
NOT waterproof!

Im on my second one of these since October and now its about to go back. Fits my aero seat post, is Fantastically cool looking and bright but as soon as you hit a little rain, game over. Works again after it dries out but battery life is tremendously shortened. So disappointed.

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