... my V11R... say ... 350 lumens
thats a good guess,
off by less than 20% from my V11r measured output, before the LED was changed
(High CRI LED swap increases CRI and lowers the output.. worth it to me for better tint and color quality)
I measured 420 lumens on the V11r with the stock Low CRI, Green Tinted XM-L2 LED w a 16340,
(box says up to 570 lumens... it also says the low is 1 lumen, the measured low on my light is 0.01 lumens)
my Original RRT-01 w stock XM-L2 reaches 586 lumens, w 16340, package says 600 lumens...
More output info.. Original RRT-01 using IMR 18350
640 lumens w Low CRI stock XM-L2
545 lumens w High CRI LH351d 5000k, a 15% drop
408 lumens w Higher CRI 219b sw45k , a 36% drop