Two things.
First, they are installed in my car.
Second, regarding adjustment. If correctly manufactured to fit the light emitting profile of an H4 bulb, why would adjustments be necessary to put it in an H4 socket? And get correct alignment with the reflector built for an H4 bulb. I have never had a problem replacing H4 bulbs with more H4 bulbs. Although I have never tried crap LED lamps. Some of their other lamps have some adjustment points. I don’t know why they need them.
This particular light has a detachable metal H4 mounting ring. With appropriate H4 bits sticking sticking out in the right places. Then you put the rubber cap back on the headlight and push the lamp through the hole. It twists in the mounting hole and is firmly attached. This lets the lamp body seal, and clears the fan. I would have preferred no fan, but I will find out how well it will work. I bought a couple of spare fans just in case. They are easy to replace. There is no external electronics to run the lamp.
Without a real place to point the car and look, driving with them, it seems to be doing just what they say they will do. Being H4 lamps.
I believe there was a post somewhere above that has a link to a motorcycle site that I believe had some photos of the slightly older version of this lamp. And people were pretty happy with them.