I get you both. I was just saying that Rolex brags about their +/- 2s/d movement accuracy so much, any new owners can simply have their watches regulated for free over those 5 years warranty if they happen to deviate outside advertised specs. Only Rolex has the most accurate data, but I imagine, like any company, they prefer to do the least amount of warranty work possible.
Will most people care? nope but personally, I admire those extra r&d that went into a mech movement. Just like some people prefer mirror chamfers / Geneva stripes / blued screws on movement bridges.
Yes, but I don't think you understand what that 2 seconds per day actually means. It means that if you take it in for service, they'll put it on a scope and tweak it so the display says 2 seconds per day, probably in one position, face up, motionless, in the climate controlled workshop...heck, it's not hard to get it to 0 seconds per day, on the bench...with just about any well sorted watch, Rolex or not. Maybe they print out the result and hand it to you with your watch.
But as soon as you put it on, the watch starts to warm up to your body temperature. When you leave the store, on a chilly April morning, the outside face of the watch cools down. When you walk, the movement of your wrist makes it run a bit faster. When you drive to work, maybe it slows down a bit because it's now facing crown up with your hand on the steering wheel. Then you park the car and run to catch the elevator, which makes it run a bit fast again. Settled in at your desk, it's now face up while you type on the computer, then crown up while you take a phone call, etc, etc, etc.
At the end of the day, many of the differences cancel each other, and you may get +/- 2 seconds/day, on most days. Some days you'll gain 10 seconds, some days you'll lose 8. At the end of the month, you might wind up a minute off, which averages 2 seconds a day exactly,
My point, originally, was that the poster who expected 2 seconds a day from a rep was being unrealistic, and that kind of accuracy, even in a gen straight from the factory, is not really what the watch is doing. And while some may chase that perfection, it's really a waste of time and money, and will drive most to insanity or the poor house.
And I promise you that your 30 year old Sub, 7 years out of service, is almost certainly not running as well as you think it is. If you were to somehow keep it on a timegrapher for the next month, as you went through your day, you'd see variations all over the place, although it's quite possible that at the end of the month it winds up averaging 2 seconds a day. Some months it might be quite a bit faster or slower, however, based on a lot of factors mentioned above.
