Trelock LS 660 I-GO Vision vs Knog Cobber Big
Comparison 2026 — Bike Lights
VS
Our verdict
Based on our weighted scoring, the Trelock LS 660 I-GO Vision edges out the Knog Cobber Big with an overall score of 82/100 against 80/100. It scores particularly well on brightness (86/100) and battery life (84/100), making it the better all-round pick in Bike Lights.
The Knog Cobber Big remains a sensible alternative if price is your main concern — it lands at €49.95 versus €49.95.
Brightness winner
Trelock LS 660 I-GO Vision
2% higher than its rival
Value winner
Knog Cobber Big
2% better value for money
Specifications
| Specification | Trelock LS 660 I-GO Vision | Knog Cobber Big |
|---|---|---|
| Price | €49.95 | €49.95 |
| Rating | ★4.3 (680) | ★4.5 (2,140) |
| Overall | 82/100+3% | 80/100 |
| Lighting | ||
| Brightness | 100 lux | 170 lumen+70% |
| Certification | StVZO, CE | — |
| Beam angle | — | 330° |
| Modes | — | 8 (incl. steady) |
| Battery | ||
| Type | USB-C Li-ion | USB-C Li-ion |
| Runtime | 5 u / 20 u+67% | 3 u (hoog) / 50 u (eco) |
| Properties | ||
| Weight | 95 g | 39 g+144% |
| Waterproof rating | IPX5 | IP67+1240% |
| Mount | — | Siliconen band |
Pros and cons
Trelock LS 660 I-GO Vision
Pros
- 100 lux with a uniform beam thanks to a custom lens design
- USB-C charging port — future-proof and fast charging
- Automatic light sensor adapts brightness to surroundings
- Made in Germany build quality and 3-year warranty
Cons
- Mounting bracket can rattle slightly on vibrations
- Higher price point than comparable Sigma lights
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