Originally Posted by
DrIsotope
In practical testing, the NIteflux was not as bright as the Dinotte 300R, and the Quad Red is significantly brighter than the 300R, despite being rated at just 200lm. The Niteflux is maybe a 150lm lamp
It's 500lm in flash mode. See their "power and runtimes" tab.
Originally Posted by
DrIsotope
I can't find anyone even claiming to use a 500lm red LED element (or combination of elements,) not even the Chinese knock-off lamps.
There is no such thing as a 500 lumen bicycle tail light.
Since you doubt the previous two claims of 500lm, what about the American-made DS-500 tail light @800 lumens in day time mode ?