Knog Cobber Big vs CatEye AMPP 800
Comparison 2026 — Bike Lights
Our verdict
Based on our weighted scoring, the Knog Cobber Big edges out the CatEye AMPP 800 with an overall score of 80/100 against 74/100. It scores particularly well on brightness (84/100) and battery life (80/100), making it the better all-round pick in Bike Lights.
The CatEye AMPP 800 remains a sensible alternative if price is your main concern — it lands at €44.95 versus €49.95.
Brightness winner
CatEye AMPP 800
2% higher than its rival
Value winner
CatEye AMPP 800
2% better value for money
Specifications
| Specification | Knog Cobber Big | CatEye AMPP 800 |
|---|---|---|
| Price | €49.95 | €44.95+11% |
| Rating | ★4.5 (2,140) | ★4.4 (3,620) |
| Overall | 80/100+8% | 74/100 |
| Lighting | ||
| Brightness | 170 lumen | 800 lumen+371% |
| Beam angle | 330° | — |
| Modes | 8 (incl. steady)+60% | 5 + Boost |
| Lens | — | Opti-Cube, met zijvensters |
| Battery | ||
| Type | USB-C Li-ion | Micro-USB Li-ion |
| Runtime | 3 u (hoog) / 50 u (eco)+50% | 2 u (hoog) / 9 u (eco) |
| Properties | ||
| Weight | 39 g+236% | 131 g |
| Waterproof rating | IP67+1575% | IPX4 |
| Mount | Siliconen band | FlexTight gereedschapsloos |
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
CatEye AMPP 800
Pros
- 800 lumens with Opti-Cube lens — even beam, no dark spots
- Side windows in the housing make you visible at junctions
- FlexTight bracket clamps tool-free onto any bar diameter
- Boost mode: tap for 10 sec of extra light when obstacles pop up
Cons
- No StVZO approval — beam may dazzle oncoming traffic
- Micro-USB instead of USB-C