Originally Posted by
Gravel Rider
Outbound Lighting. I'm using the Evo/Hangover combination. Expensive but well worth it!
I just bought the Outbound Trail EVO after checking out a couple that folks I ride with bought. Freaking outstanding bar light. It is the first time I don't feel like I am riding in a tunnel. This light truly proves it is not the amount of lumens (though this has plenty), it is how you spread them out. I have some Chinese Amazon lights that are probably 2x the lumens, but I can see SOOOO much better with the Trail Evo. Great company too.
https://www.outboundlighting.com/
As far as the 4 hour run time the OP is looking for....if he wants to run it on high the whole time, that will require getting a decent sized powerbank with Qualcom Quick Charge 3.0 in order to deliver the charge fast enough. Also requires that you hook the powerbank up from the start. I am looking into that, though realistically, the runtime without an external battery is fine for what I use it for.
I use a Cygolite Metro 850 on my helmet. My helmet comes with a go-pro mount attachment, and I have a Cygolite adapter for that. I like that I the light clips in and out of the mount so easily, so I can leave the light in my pack until I need it, and then it clicks in in seconds. Also works well as a bar light on my commuter bike and road bike.