Knog Cobber Big vs Knog Blinder 900
Comparison 2026 — Bike Lights
Our verdict
Based on our weighted scoring, the Knog Cobber Big edges out the Knog Blinder 900 with an overall score of 80/100 against 80/100. It scores particularly well on brightness (84/100) and battery life (80/100), making it the better all-round pick in Bike Lights.
The Knog Blinder 900 remains a sensible alternative if price is your main concern — it lands at €69.95 versus €49.95.
Brightness winner
Knog Blinder 900
10% higher than its rival
Value winner
Knog Cobber Big
6% better value for money
Specifications
| Specification | Knog Cobber Big | Knog Blinder 900 |
|---|---|---|
| Price | €49.95+40% | €69.95 |
| Rating | ★4.5 (2,140) | ★4.2 (420) |
| Overall | 80/100 | 80/100 |
| Lighting | ||
| Brightness | 170 lumen | 900 lumen+429% |
| Beam angle | 330° | — |
| Modes | 8 (incl. steady) | — |
| Certification | — | CE |
| Battery | ||
| Type | USB-C Li-ion | USB ingebouwd |
| Runtime | 3 u (hoog) / 50 u (eco)+100% | 1,5 u / 20 u |
| Properties | ||
| Weight | 39 g+195% | 115 g |
| Waterproof rating | IP67 | IP67 |
| Mount | Siliconen band | — |
| Material | — | CNC aluminium |
Pros and cons
Knog Cobber Big
Pros
- 330° visibility — you're seen from the side at junctions too
- USB-C charging port (Knog finally caught up)
- 170 lumens, bright enough for daytime riding
- Silicone housing — no fragile hinges or brittle clamps
Cons
- Flash modes are not legal as sole rear light in the Netherlands
- Silicone strap wears after 2-3 years of daily use
Knog Blinder 900
Pros
- 900 lumens of power — capable on unlit forest tracks
- Built-in USB-A plug: no charging cable required
- Extremely compact CNC aluminium housing
- Six light modes including daytime running light and eco
Cons
- Not StVZO approved — can dazzle oncoming traffic without adjustment
- Relatively short runtime on full power (1.5 hours)