>>I second that.  My "cheap" $15 wrist watch has kept very accurate
>>time in relationship to the clock server I compare it to.
>>
>>Within a second or two.
>>
>
>The reason may be, that the temperature of the wrist-watch is relativly
>constant.
>
>regards
>
Thirty years ago I got interested in celestial navigation (long before
GPS). Ever since then I have always had a WWV receiver and hacked my
digital watch against it every weekend. A long succession of watches,
mostly Casio, have typically varied by only a couple of seconds per week.
The watch is left on the bedstand at night. Whether it's fast or slow
depends on the season; obviously there is some temperature sensitivity, but
they've got it trimmed about right for an average user in an average
location. None of my computers keeps anywhere near that accurate time on
their internal clocks.

Reg