Sigma Buster 1100 vs Knog Blinder 900
Comparison 2026 — Bike Lights
Our verdict
Based on our weighted scoring, the Knog Blinder 900 edges out the Sigma Buster 1100 with an overall score of 80/100 against 78/100. It scores particularly well on brightness (94/100) and battery life (68/100), making it the better all-round pick in Bike Lights.
The Sigma Buster 1100 remains a sensible alternative if price is your main concern — it lands at €74.95 versus €69.95.
Brightness winner
Sigma Buster 1100
2% higher than its rival
Value winner
Sigma Buster 1100
2% better value for money
Specifications
| Specification | Sigma Buster 1100 | Knog Blinder 900 |
|---|---|---|
| Price | €74.95 | €69.95+7% |
| Rating | ★4.5 (1,210) | ★4.2 (420) |
| Overall | 78/100 | 80/100+3% |
| Lighting | ||
| Brightness | 1100 lumen+22% | 900 lumen |
| Certification | CE (geen StVZO) | CE |
| Modes | 5 | — |
| Battery | ||
| Type | USB-C Li-ion, snellaad | USB ingebouwd |
| Runtime | 1,5 u (1100 lm) / 3,5 u (500 lm) | 1,5 u / 20 u |
| Charge time | 2,5 u | — |
| Properties | ||
| Weight | 148 g | 115 g+29% |
| Waterproof rating | IPX5 | IP67+1240% |
| Mount | Stuur + helm meegeleverd | — |
| Material | — | CNC aluminium |
Pros and cons
Sigma Buster 1100
Pros
- 1100 lumens — enough to light pitch-black forest 50 metres ahead
- Helmet mount AND bar mount included
- USB-C fast-charge (2.5 hours empty-to-full)
- Aluminium heatsink prevents throttling on long rides
Cons
- No StVZO approval — legally dubious in the Netherlands as sole front light
- Just 1.5 hours runtime on full power
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)