They see major glitches in reflections, something Seiko prizes in their lines, lots of light like diamonds, and dust bunnys. I can't tell you how many magnifier shots I took to serve my purpose to make a big hole in one of my watch boxes. The worst was the last, today, I had a newbie looking at a beautiful PVD piece that had baby scratches on the back. He had no feedback and so we talked on FB messenger to check him out. So I get an email from another bloke who had been fence sitting that he had just PPed me. The poor kid was gobsmacked, so upset that I gave him a bunch of pointers to improve his standing in the eyes of future buyers. I felt like I was his dad after he lost the peewee football game.
Personally I don't think Seiko's black finish is on par with their Ti and stainless and the gold is richer than even Rolex, not that I'll be buying one soon unless L'Oreal buys out my new perfume line. Anyway, I got through with relative success and relief, no offense to anyone here, but I don't like absurd anal retentives at this price point, the watches are built to take hard knocks and never have a hand fall off or the movement suddenly veer from time spec.