









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
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 within US mainland 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 US mainland customers only. If you're shopping from another location, please visit our international store.
I decided it was time to upgrade from my Knog Blinder Mr Chips (a great light) so I was highly visible to drivers whilst riding in inner city. Big Cobber is an awesome product - 270 lumens and curved design really stands out. When driving I see too many cyclists with inadequate rear lights - not me!
Excellent product...........I am a long time bike riding tail light collector and rejector........this is by far the best one I have used
This light is bright and charge lasts a long time. Easy to attach to the bike.
What an outstanding light! I am scared to put it on "full-blast" mode for fear of upsetting motorists. I feel so safe and the many modes are excellent. Worth every cent! thanks KNOG
Very impressed with this light. Many modes but most importantly very bright so you can be seen for 1km.