Busch & Müller Lumotec IQ-XS vs Sigma Buster 1100
Comparison 2026 — Bike Lights
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Our verdict
Based on our weighted scoring, the Busch & Müller Lumotec IQ-XS edges out the Sigma Buster 1100 with an overall score of 82/100 against 78/100. It scores particularly well on brightness (78/100) and battery life (98/100), making it the better all-round pick in Bike Lights.
The Sigma Buster 1100 remains a sensible alternative if price is your main concern — it lands at €74.95 versus €45.00.
Brightness winner
Sigma Buster 1100
18% higher than its rival
Value winner
Busch & Müller Lumotec IQ-XS
10% better value for money
Specifications
| Specification | Busch & Müller Lumotec IQ-XS | Sigma Buster 1100 |
|---|---|---|
| Price | €45.00+67% | €74.95 |
| Rating | ★4.6 (1,820) | ★4.5 (1,210) |
| Overall | 82/100+5% | 78/100 |
| Lighting | ||
| Brightness | 70 lux | 1100 lumen+1471% |
| Certification | StVZO, CE | CE (geen StVZO) |
| DRL | Ja, automatisch >6 km/u | — |
| Modes | — | 5 |
| Power | ||
| Type | Naafdynamo 6V/3W | — |
| Standlight | 4 minuten | — |
| Properties | ||
| Weight | 82 g+80% | 148 g |
| Waterproof rating | IPX4 | IPX5+25% |
| Mount | Vork- of kroonsteun | Stuur + helm meegeleverd |
| Battery | ||
| Type | — | USB-C Li-ion, snellaad |
| Runtime | — | 1,5 u (1100 lm) / 3,5 u (500 lm) |
| Charge time | — | 2,5 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
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