Big Cobber Rear Bike Light
Lumens are a measure of the total amount of visible light from a light source. The higher the lumen rating the “brighter” the light will appear.
Big Cobber produces an incredible 330° of light, so you’ll be clearly seen from behind as well as from both sides. It’s brilliantly effective at attracting attention day and night, making it one of the safest rear bike lights you could choose.
Big Cobber produces an incredible 330° of light, so you’ll be clearly seen from behind as well as from both sides. It’s brilliantly effective at attracting attention day and night, making it one of the safest rear bike lights you could choose.
18 factories told us Cobber would be impossible. We were happy to prove them wrong.
- Incredibly bright 270 lumens
- Up to 100 hr runtime
- Incredible 330° beam angle
- Quick mount release
- Waterproof to 3 ft with an IP67 rating
- USB rechargeable, cable-free charging
- Pre-programmed with 8 light modes
- Customize modes with Knog's Modemaker app
- Compatible with standard & aero seat posts
| MODE | LUMENS | RUNTIME |
| Max |
160 | 2 hrs |
| Mid | 60 |
3.5 hrs |
| Steady Pulse | 270 | 2.5 hrs |
| Flash | 270 | 6.5 hrs |
| Rolling Flash | 110 | 5.5 hrs |
| Side Flash | 170 | 2 hrs |
| Disco Flash | 140 | 5 hrs |
| Eco Flash | 15 | 100 hrs |
Free shipping to Continental USA on orders over $50 and just $6 on orders under $50. We'll ship it asap, and have it delivered within 2 - 4 business days.
Returns & Exchanges
We stand behind everything we make and want you to be happy. If for any reason you're not satisfied with your purchase, return it within 30-days for a full refund. We'll even pay the shipping. For more information, please see our Returns & Warranty page.
Shipping on Knog's US website is available to Continental USA customers only. If you're shopping from another location, please visit our international store.
Bright, Versatile, Excellent quality and Just what the new road bike needed. The standard + extra flash patterns at various brightness’s means this light will make you unmissable no matter the situation and will last as long as you do.
Day or night there is a setup that is perfect.
Ease of operation, mounting and charging is another plus. Then that they are lightweight and aerodynamic is a plus plus.
Nice build quality, the light shines brighter than a Sith Lords Lightsaber. Nice integrated usb charging for ease without cables.
This is an all round superbly designed and sturdy product, all the lumens you need and great visibility from the rear and side. The charge lasts for ages. Essential for rider visibility when winter riding in the dark but it also works well in daytime conditions too. Attaches easily to the seatpost. My only minor gripe is that out of the box it can be a tad difficult to detach the light from the part that attaches to the bike frame, which you need to do to access the USB charger. This does get easier over time with repeated use and technique though. The included USB extender cable is really useful when charging using a laptop/ PC.
Some lights just make it hard to see anything and they annoy people - this one is super bright but not "in your face" bright. Love the size and the unmistakable alert it gives out.
Excellent !
