Thank you seller. Fast delivery, ordered on the 25th Nov 2020 and was delivered 17.12.2020. I do not know about the quality as I have not tested it yet. It fit perfectly on my Celestron telescope and replaces the one that came with the telescope as it broke.
Seller great but Nlnot so good product. Biggest issue is that I cannot calibrate it. Maximum range is not enough to hit target. So it is basicly useless for me. I bought it to replace celestron circular red dot (cheaper) as it did not have leg that fits my new telescope. Luckily old one and svbony one have same adapters so I can use old one on svbony legs. Also it does not have light strength setting as cheaper one. Just max power and that is bad when targeting low magnitude targets. Build quality is better than cheaper celestron device. Seller is perfect as always and shipping is first thing thst arrived from 11.11 so no problem with that.