Sigma Aura 80 USB vs Busch & Müller Lumotec IQ-XS
Comparison 2026 — Bike Lights
VS
Our verdict
Based on our weighted scoring, the Busch & Müller Lumotec IQ-XS edges out the Sigma Aura 80 USB 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 Aura 80 USB remains a sensible alternative if price is your main concern — it lands at €34.95 versus €45.00.
Brightness winner
Busch & Müller Lumotec IQ-XS
2% higher than its rival
Value winner
Sigma Aura 80 USB
8% better value for money
Specifications
| Specification | Sigma Aura 80 USB | Busch & Müller Lumotec IQ-XS |
|---|---|---|
| Price | €34.95+29% | €45.00 |
| Rating | ★4.4 (1,560) | ★4.6 (1,820) |
| Overall | 78/100 | 82/100+5% |
| Lighting | ||
| Brightness | 80 lux+14% | 70 lux |
| Certification | StVZO, CE | StVZO, CE |
| DRL | — | Ja, automatisch >6 km/u |
| Battery | ||
| Type | USB Li-ion | — |
| Runtime | 4 u (hoog) / 15 u (eco) | — |
| Properties | ||
| Weight | 73 g+12% | 82 g |
| Waterproof rating | IPX4 | IPX4 |
| Mount | Siliconen snelkoppeling | Vork- of kroonsteun |
| Power | ||
| Type | — | Naafdynamo 6V/3W |
| Standlight | — | 4 minuten |
Pros and cons
Sigma Aura 80 USB
Pros
- 80 lux output — more than enough for unlit cycle paths
- StVZO approved: no dazzling of oncoming traffic
- USB rechargeable with up to 15 hours runtime in eco mode
- Quick-release mount for easy removal to prevent theft
Cons
- Micro-USB instead of USB-C (outdated connector)
- No daytime running light mode available
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