I don't really want to get into a grammatical discussion about the correct term to use, I'm using Accuracy, substitute whatever term you think is the correct one.
I've had a Nav-B Chrono for a couple of months or more now. This is really a well designed watch, of all the significantly more expensive Nav-B style Chronos the Steinhart is just, well, elegant and simple. No numbers eaten away, easy to read etc. The only thing I would have done differently is to have the small seconds pointer the same style as the other two, but that's a minor personal preference thing. I run it with the chrono always on (I like the sweep second hand). When I set it up, I align the sweep second hand with the small seconds at 9 o'clock - that's just me.
I haven't reset the time for a couple of weeks now so I thought I'd check to see how far out it was in that two weeks or so. To my amazement, it was 3 seconds slow (or between -0.2 to -0.3 secs per day-ish). I know fast is generally considered better, but at that rate, who cares. Whilst not scientific, it certainly illustrates the almost freakish accuracy of the Valjour 7750 movement (well, at least in my case). The watch comes off my wrist once a day or if I'm gardening (I'm told they dislike showering) so it doesn't sit on a watch winder or anything like that, just on the wrist. To put it into context, my Nav-B Auto Type B keeps between 5-6 seconds /day fast.
So no earth shattering news, just felt good about the 'accuracy' and wanted to tell someone (who would appreciate the info).