I received a new Antea 365 COSC (ordered for my wife) about six weeks ago, and after a month of accuracy at +1 daily, it sped up to about +7...
As many obsessives do, I tasted despair. (I know, but don't tell me that you haven't been there.)
I searched around and read, somewhat hidden in the middle of an endless discussion of whether COSC movements are worth the expense, that watches run faster when they are not adequately wound -- something that can easily happen with automatic watches.
I wound the watch by hand, and accuracy immediately improved to about +4.
Here's my question:
Short of recalibration, what can one do in the handling of a watch to maximize accuracy?