I bought their flip up prism loupes in November 2021. The crossbar bar on that version was horrible and virtually impossible to accurately adjust the IPD. I see they have changed it to a new crossbar now having realised how horrible the previous model was. I contacted them and they promise send me a new crossbar. They sent a cheap plastic crossbar which did not fit the loupes that I had ordered. They then promised to send the newly designed crossbar and after 6 months, I still don’t haven’t received anything. Their customer service is horrible with no updates unless you contact them repeatedly. I am now stuck with a more that $1000 loupes that is totally useless!!!! This has to be the worst customer service experience I have experienced!