>>3131115> My seiko is advancing almost two minutes every 24h.You realise every watch has a pendulum tension adjustment lever, right? It's usually even fucking marked +/- and sometimes there's even an etched scale to help make the fine-tuning precise. You don't have to be a watchmaker to know this/use it, just a goddamn human being with eyes and at least one working hand.
I don't think there's anything wrong with your seiko anon, it just has a bad user.
Ditto for "soviet" cameras and most reasons idiots complain about them.