There are also some other resources showing this product design:
Stonker Labs (videos) Group
eScootNow Facebook Page
eScootNow Facebook Group
https://www.facebook.com/groups/escootnow
Some of those socials have design concepts that I will transfer into the “A bicycle light by Sofirn” page at A bicycle light by Sofirn . I think the Stonker design is adequate, just needs StVZO lens (German Straßenverkehrs-Zulassungs-Ordnung (Translation: Road Traffic Licensing Regulations)).