Originally Posted by
Clyde1820
350 lumens output -- 2hrs duration, at that "high" setting; wish duration on "high" were greater, but it's simple enough to ride with two of these units, and to use a power bank to charge-up the drained one while the other is running, for extended rides
The only output number I have seen for these is from the Cygolite web site, where they state, "350 lumens flashing".
Have you ever seen a source specifying the output for their "steady" modes?
In the flashlight world, it's not uncommon to see independent output measurements performed by enthusiasts as part of their reviews, but that's not often the case with bike lights.