Sigma Aura 80 USB vs Busch & Müller IQ-X
Comparison 2026 — Bike Lights
VS
Our verdict
Based on our weighted scoring, the Busch & Müller IQ-X edges out the Sigma Aura 80 USB with an overall score of 92/100 against 78/100. It scores particularly well on brightness (90/100) and battery life (100/100), 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 €89.95.
Brightness winner
Busch & Müller IQ-X
14% higher than its rival
Value winner
Sigma Aura 80 USB
14% better value for money
Specifications
| Specification | Sigma Aura 80 USB | Busch & Müller IQ-X |
|---|---|---|
| Price | €34.95+157% | €89.95 |
| Rating | ★4.4 (1,560) | ★4.7 (960) |
| Overall | 78/100 | 92/100+18% |
| Lighting | ||
| Brightness | 80 lux | 100 lux+25% |
| Certification | StVZO, CE | StVZO, CE |
| Standlight | — | Ja, met condensor |
| Battery | ||
| Type | USB Li-ion | — |
| Runtime | 4 u (hoog) / 15 u (eco) | — |
| Properties | ||
| Weight | 73 g+99% | 145 g |
| Waterproof rating | IPX4 | IP44+1000% |
| Mount | Siliconen snelkoppeling | — |
| Power | ||
| Type | — | Naafdynamo 6V / 3W |
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- Micro-USB instead of USB-C (outdated connector)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 IQ-X
Pros
- 100 lux with the widest, most even beam in its class
- Hub-dynamo powered: no more charging or battery swaps ever
- Standlight with capacitor — stays lit at traffic lights
- Fully weather resistant and virtually maintenance free
Cons
- Requires a hub dynamo — not an option for bikes without one
- Permanent mount: not easily swapped between bikes