If you're comparing brightness of 500 lumen+ battery light to dynamo lights, you will be disappointed. I have the Eyc, it's not very bright, not if you want to ride more than 30km/h. The real life beam brightness is nowhere close to the photos taken by peterwhitecycles.com.

To the person recommending the Planet Bike 1W dynamo light, that is a be-seen light only, if it's anything like the 1W battery version I had (which I gave away), the beam pattern is one weak spotlight on the road.

Although I keep getting disappointed with B&M products, I will throw in a Cyo Premium on my next order from bike-discount.de.

Busch + Müller Lumotec IQ Cyo Premium T senso plus | Front Lights Shop