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Search Results for "automatic"
There were 5 articles found for your search:
  1. What does "17 jewels" mean?What does "17 jewels" mean?
    ...rd wheel pivot bearings (one pair) 16-17: Center wheel pivot bearings (one pair) Note that automatic winding movements, and movements with additional functions such as chronographs and calend...

  2. Are more jewels better?Are more jewels better?
    Not necessarily. A typical hand-wind movement today will have only 17 jewels as a full complement. Some really high-grade or ultra-thin movements will add a few extra jewels to further protect...

  3. What's the difference between a manual and automatic watch?What's the difference between a manual and automatic watch?
    An automatic wristwatch is a mechanical wristwatch with a self-winding mechanism. In other words, one does not have to wind the crown periodically to keep the watch running. A manual or manual wi...

  4. How does an automatic mechanism work?How does an automatic mechanism work?
    ...n has written an in-depth article about the Physics of the Automatic Watch's Winding System. All automatic watches have an overwind protection mechanism of one sort or another, to prevent breaking ...

  5. What is a watch winder, and do I need one?What is a watch winder, and do I need one?
    Collectors who have more than one automatic watch may have "difficulty" keeping any one watch going continuously. This leads to increased inconvenience if calendars and moonphases must be reset. A...