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Big Cobber

Big Cobber Rear

AUD $134.99

This product in currently out of stock


Big Cobber rear produces an incredible 330° of light, so you’ll be clearly seen from all angles.

It’s brilliantly effective at attracting attention day and night, so if you’re after the safest commuter bike light around then look no further.

364 in stock


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Simple Button

Simple Button Knog Knog

Big Cobber is super simple to operate. A long press of the single button will turn the light on and off, and a short press will cycle through the modes. The Big Cobber has a run time of up 120 hours.

Super Bright

Super Bright Knog Knog

Packing 270 lumens, Big Cobber is seriously bright. Efficient Chip on Board (COB) LEDs provide maximum brightness level for up to 90% of the battery burn time. Big Cobber comes pre-programmed with 8 modes, plus it’s compatible with the ModeMaker app so you can customise your light modes.

Mount with Ease

Mount with Ease Knog Knog

Cobber comes with a tool-less removable silicone straps for bars and seat posts 22 – 32mm+ diameter and a magnetic mount. A large strap is also provided that will fit tubes and head tube profiles with a circumference of up to 200mm. Cobber comes with a standard and Aero mount.

Integrated USB Plug

Integrated USB Plug Knog Knog

No charging cable is required for your Cobber, its integrated USB plugs directly into USB ports. It has a charge time of 5.5 hours. When your Cobber is running low on battery, a red ring will light up around the button. This ring will turn green and then turn off once the Cobber is fully charged and ready to go.

18 factories told us this light would be impossible

18 factories told us this light would be impossible

We were happy to prove them wrong.

  • Specifications
  • Instructions


H: 22mm x W: 33mm x L:93mm


62 grams

Charge Time

5.5 hours



  • Modes Lumens Runtime
  • Max 160 2
  • Mid 60 3.5
  • Steady Pulse 270 2.5
  • Flash 270 6.5
  • Rolling Flash 110 5.5
  • Side Flash 170 2
  • Disco Flash 140 5
  • Eco Flash 15 100


Watch the instructional video or download the user guide below.

Cobber Quick Start Guide

Customer Reviews

Based on 1 review
Roger Cooper
Great light but...

I really like this light. It's bright and visible from the side as well as the rear. It's so bright I think that cars are giving me a little more room but that could be my imagination. Battery life is fine.
There are some flaws though. The biggest is the mount. It's great when new but I take my light off once I arrive at work, (to prevent theft) and put it on again before cycling home. After a few months the connection between the light and the mount is very loose. If I go over a bump the light comes off. I have to look back every few minutes to see if my light is still attached to the bike. I've already lost one and the current one has hit the road at least 20-30 times but I've managed to retrieve it from the road.
I had a battery fail after around a few months and Knog were great. They supplied a replacement pretty quickly.
Another issue is the on/off button. After riding in the rain for several days in a row it becomes incredibly stiff and it is almost impossible to turn the light on. I have been spraying silicon into the switch every month or so to prevent this.
I do like the light though and I'm now on my third. It's rugged as well. If it wasn't for the mount and the switch it would easily rate 5 stars.