I reviewed the Manker U21 and Utorch UT02 in a side by side comparison HERE sometime back. They both made less than 1100 lumens with the Utorch being the brighter of the two.
And a quote of myself to the friend that gifted this sample light to me…
“DB Custom wrote: So now, after it’s been here about 2 hours, it’s making 1414.5 lumens from a sliced XHP-35 V6 3A E4 (5700K), nice white tint, for the most part. Removed R050 sense resistor and replaced it with an R025 for 4.83A at the tail. Replaced 24-26 ga wire with 22ga Turnigy. 101Kcd for 635.61M throw with no modification to the emitter/reflector relationship.
I measured 890 lumens before the change. Cell is a new LiitoKala 26650 5000mAh black and gold. (literally hasn’t been in a light til now but was charged a few days ago.)”
890 lumens from the sample light, doesn’t seem like they were trying to get anyone excited about it with the samples.