They look like any other cheap made in China red dot to me, similar to a RioRand, NCStar, etc. Probably fine for a 22lr but I wouldn't trust them to hold up to the conditions of hunting in the elements or rigors of competition.
I have two NCStar and one Cross Point red dot. The crispness of the dot isn't great, the brightness adjustment on one or two of them is way too stiff, the flip up caps are pretty darn cheap... Im sure you get the point.
There is a reason the Bushnell trs-25 is extremely popular, even though its like $150+ these days regular price. You get what you pay for...