TAG Heuer Men's Formula 1 Grande Date Chronograph Watch

I have a new SMP Bond Chrono Diver with the Caliber 1164. It runs a little more than 4 secs fast/day, so I decided to wind it fully and let it exhaust the power reserve as break in to see if it might slow down a smidge. It's a little too early to tell about the effect on accuracy, but I was surprised that the watch ran for 52 hours even though the stated reserve is 44 hours.Don't get me wrong. I am delighted that the actual reserve is 4 hours beyond 2 full days, as I find that much more convenie........

i wonder how did anyone created the constant of time? or something to refer a timing to.at first mechanical watches were invented. and some is said to be not accurate. but how they they knew? they need to refer the time to something that has a constant time. but how would they know that it is constant?as now there is quartz watches, it is said to be very accurate. they calculate how many vibrations in a second. but then again, that need to be timed to count how many vibrations in a second. so i ........