It’s a holographic sight. that I’d put next to a $300 Trijicon or Vortex any day of the week.
In fact... it comes from the same factory that makes red dots 5 - 10 times the price.
For less than $45, some people think we're a little nutty for offering such a high-quality optic at such a bargain basement price... but hey a good deal is a good deal.