What Is the Aperture of a Watch?

Rolex Submariner

The aperture of a watch refers to a small opening on a dial that reveals certain information, such as date, day, month, power reserve, or moon phase.

Probably the most well known example is the Rolex cyclops which magnifies the day of the month aperture.

To learn more about watch terms, be sure to visit our glossary now.

Categories: Glossary & Terms, Rolex, Swiss Watch Tips & Trivia.

Comments (5)

  1. Swiss Watch Boutique very nice. Great post! Buying Swiss watches is definitely a great investment.

  2. Is small aperture/long exposure a way to increase DoF? If so, then I’ll try it too, when the light returns to the Northeast U.S.

  3. Zegarki

    Nice article and really good glossary.

  4. The Rolex cyclops is well designed; it’s actually two separate pieces and really innovative. Great fact of the day!

  5. Nice article, something else to take notes!

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