I just tested my wuben E05 from amazon in my maukka lights calibrated Lumen Tube and got 900 lumens at turn on from the wuben 14500 and the same number from a efest 14500 out the front.
It does do 900 lumens out the front for at least for a second, I got 802 lumens at the 30 second mark. Nice to see a manufacture that list honest lumen numbers. :+1:
Very nice well built light in my opinion. Come up with a slightly better UI and you got a winner.