Detailed analysis of a Seiko automatic. More on automatic watches @ Wikipedia. Here is a link to a page at the Breguet web site, briefly describing how they give a perpetual calendar function to a mechanical wristwatch--tiny springs and wheels that keeps track of whole years, even leap years. And here is a link to a web site of used ("vintage") Breguet watches for sale. Here is an article explaining how a perpetual calendar mechanism works in an IWC watch, a Breguet rival.
Musings
- Here's a conundrum: As a rule, mechanical watches (wind-up or automatic) cost most than those with a quartz (battery-driven) movement, sometimes considerably more. Why then would anyone buy a mechanical watch?
- When else do some people prefer older, often less efficient technologies, even if they cost more? Here's one suggestion--consider the extent that mechanical watches today are a little like horses: a fabulous, but out-dated technology on which people spend vast sums of money for little practical reasons.