https://en.wikipedia.org/wiki/Quartz_clock
A high accuracy quartz watch is accurate to 10 seconds per year.
https://www.watchtime.com/featured/high-accuracy-quartz-guid...
However, railroad standard was 4 seconds daily. That means that if a high accuracy quartz watch is never checked it may fail the standard within a year. However, a less accurate railroad chronometer will always be checked because it is less accurate.
Wikipedia article.[1]
Yuck.
I now want this as a battery life indicator on a smart watch.
I did not buy this watch, and yet, considered it as a gift to a friend who is a watchs mini collector.
The watch has a "story", and when one get a compliment, he can tell the story, and that is perhaps the reason we buy some of our goods, for the story behind the product, for the "making of", never the less as for hte product itself.
Besides, everything assosicated wit htrains and taildrods turns on the imagination nostalgy by many.