Busch & Müller Lumotec IQ-XS vs Knog Blinder 900
Comparison 2026 — Bike Lights
VS
Our verdict
Based on our weighted scoring, the Busch & Müller Lumotec IQ-XS edges out the Knog Blinder 900 with an overall score of 82/100 against 80/100. It scores particularly well on brightness (78/100) and battery life (98/100), 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 €45.00.
Brightness winner
Knog Blinder 900
16% higher than its rival
Value winner
Busch & Müller Lumotec IQ-XS
12% better value for money
Specifications
| Specification | Busch & Müller Lumotec IQ-XS | Knog Blinder 900 |
|---|---|---|
| Price | €45.00+55% | €69.95 |
| Rating | ★4.6 (1,820) | ★4.2 (420) |
| Overall | 82/100+3% | 80/100 |
| Lighting | ||
| Brightness | 70 lux | 900 lumen+1186% |
| Certification | StVZO, CE | CE |
| DRL | Ja, automatisch >6 km/u | — |
| Power | ||
| Type | Naafdynamo 6V/3W | — |
| Standlight | 4 minuten | — |
| Properties | ||
| Weight | 82 g+40% | 115 g |
| Waterproof rating | IPX4 | IP67+1575% |
| Mount | Vork- of kroonsteun | — |
| Material | — | CNC aluminium |
| Battery | ||
| Type | — | USB ingebouwd |
| Runtime | — | 1,5 u / 20 u |
Pros and cons
Busch & Müller Lumotec IQ-XS
Pros
- 70 lux dynamo-powered — no battery to charge, ever
- StVZO approved with sharp cut-off, no dazzling
- Daytime running light (DRL) boosts daytime visibility by 30%
- Standlight stays on for 4 minutes after stopping at traffic lights
Cons
- Requires an existing hub dynamo — not a plug-and-play retrofit
- Wired installation is more involved than clipping on a USB light
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)