Oh, and I forgot to mention about a very eye-opening post I read in Chronocentric about our incessant preoccupation with seconds lost or gained !
'An expensive watch is more accurate, right?
If this is your first time buying an expensive wristwatch, there is one very important fact you need to know in advance. A $25 Timex or Casio digital watch will keep time just as well as, and possibly better than, a $20,000 solid gold mechanical Omega, Rolex, or other very fine watch.
If that last statement surprised you, read the rest of this section carefully.
All watches tend to gain or lose a few seconds over a period of time. These are small mechanical or electro-mechanical devices that are counting out 86,400 seconds per day. Even if a watch is 99.9% accurate, it will still be off by a minute and a half in only 24 hours! So even a mediocre wristwatch has to be well over 99.9% accurate to even begin to be useful on an ongoing basis.
Check out the attached PDF file for Watch Accuracy Expectations
Ultimately, if you are living so close to the edge that having your watch off perfect time by less than a minute bothers you or otherwise throws your life into disarray, you probably need less caffeine and a vacation!'