I really like this light, it checks a lot of the boxes. Almost perfect. All I want is a good reliable 18650 light with none of the cheesy silly gimmicks like strobe or s.o.s. or whatever. I want "on" and "off" with a good battery life. This light is the closest to that I have found.
The light from the Nichia 219c is great.
The brightness adjustment is done in such a way that it is actually useful. I keep it set in the bottom 30% and never have to worry about glare when turning it on. While it does have the useless strobe gimmick, it is done in such a way that it cannot happen by accident.

One small con is I would like a bit more resistance on the adjusting ring,

I'll be getting another.

I’ve had RRT-01 flashlights since they came out. My most recent RRT-01 is the warm color LED and it’s fantastic. I have the identical light in cool and it’s just as bright. It’s just a different color light. I keep this in my pocket always. It’s so easy pulling it out and twisting the variable dimmer. I leave the switch turned on, the switch is a bonus. The last generation didn’t have a rear clicky. I love this light and give it 5 stars all day long

So nice! The continuously variable rotary control is my preferred interface but is so hard to find in the market. This light is a great size for pocket EDC and allows plenty of use on a charge for my daily use. The Nichia output and color are both top notch. I like having both switches, the tail switch is nice for lockout / momentary when needed or can be left on and just use the dial. This is a great light to update my aging SRT3, and I can keep using my fleet of 16340's.

Looking for a replacement for my Sunwayman variable that stopped working well after ai dropped it, and this is Almost it. It is a bit larger, a bit heavier, but not bad. Unfortunately the variable adjustment has a huge dead spot at the beginning which wastes almost 20% of the rotation, and there doesn’t seem to be a recommended replacement battery (the one 18350 I’ve tried from Thrunite is slightly too big and gets stuck).

I have collected numerous Jetbeam flashlights since the company's inception over a decade ago. At the top end of Jetbeam's line, the Raptor series has been aesthetically designed but purposefully engineered. The light is built to a very high quality standard. The head internally has a large slug of brass to heatsink the led and each end of the light is finished off with a bead blasted stainless steel protection ring. The RRT01 is one of the best versions I have purchased form them yet. The light is small enough to be an everyday carry, but practical enough to use as your primary workhorse. I purchased the Nichia 219c version and am extremely happy with the tint and color quality of the light. I'm really glad to see Jetbeam offer additional emitter options for those who value the quality of the light emitted. Further, the variable ramping function of the control ring is a tremendous asset. The light can be steplessly and precisely adjusted to fit the situation. There is also enough power at the top end to aid in an emergency, creating a wall of light to work with. One other feature I like is that when the light is turned on, it has about a half second ramp up to your set light output. That is awesome when using the light in dark settings as there is no abrupt, instantaneous flash of light. Overall, I'm really happy with the refinements made. The build quality is exceptional for the price, you wont be disappointed. if you are looking for a great EDC that has excellent versatility and build quality then consider this in your list of options. Kuddos Jetbeam!