Any StVZO approved light. Germany has bike lights regulation, the lights should be designed not to blind / dazzle traffic in the opposite direction. This means the lights usually have better designed lens, resulting in less lumens needed in general.
I use Lezyne LITE DRIVE STVZO PRO 80, I see they no longer make it but have more powerful version. Can be easily mounted to garmin gopro mount or use the mount supplied by them. Wired remote is nice bonus.
This is the pattern from my light. You can clearly see how the top is cut not to blind incoming traffic or people.
https://www.lezyne.com/images/product/Product-led-litepro80stvzo-y11-zoom4.jpg
I am so with you. Many modern lights have all fancy software (apparently you can talk to some), but the reflector and beam shape are last century’s technology.
I think it’s offensive if someone blinds you with his MegaWatt trail light. 80% of the beam goes into space/into trees, or worst: Into oncoming riders/drivers eyes.
Can’t believe there are no regulations on this. Plain dangerous.
I have the Busch&Muller ICON IQ.
http://en.bumm.de/produkte/akku-scheinwerfer/ixon-iq.html
The beam is where I need the light and there is little ‘waste’, with up to 5 hrs runtime in high mode. Regular rechargeable batteries.
It doesn’t take voice commands, but maybe my German just isn’t good enough.
.
There’s plenty of regulations in Europe (and UK) for road going vehicles. Inc bikes (you all still have the reflectors on your pedals, handlebar and seat post haven’t you ?? And not taken any of them off because they cause an aero penalty or look naff on a €10k bike ??)
Luckily the Stazi in the UK have not yet decided to take up on this.
Better to be illuminated than not.
Gives the dickhaed drivers fiddling about with their radio / phone / knob no excuses for not seeing the biker.
And irrespective of any lens shape, if the bleedin thing is not mounted pointing in the right direction and angle (often with a naff rubber bungee mount) then the lens shape is utterly irrelevant.
The good quality UK made lights from the likes of Expusure, Hope and lumicycle do have smart designs of lenses if you buy the right ones anyway to maximise useable light vs trying to illuminate the heavens - but see my 1st comment re. cheaper stuff from China made by kids or the oppressed.)