Screw-down crown: what is it for and why is it so important in watchmaking ?

Discreet yet essential, the screw-down crown is an often overlooked technical element, yet fundamental in the world of watchmaking. Particularly prevalent on dive watches, it plays a crucial role in protecting the movement and ensuring the watch's durability. So, what is its real purpose? And why is it so prized by enthusiasts of robust and reliable timepieces? We'll explain everything.

What is a screw-on crown?

The crown is that small button located on the side of the CaseThis allows you to set the time, date, or wind an automatic movement. A screw-down crown is distinguished by its threads: it must be unscrewed to be used, then screwed back in to ensure the watch's water resistance. This system transforms a potentially vulnerable point into a true protective barrier.

A key role in sealing and robustness

The main advantage of the screw-in crown is the enhanced sealing it provides. By mechanically locking the crown against the CaseIt prevents water, humidity, dust, or sand from entering the mechanism. This makes it an essential element on sports or diving watches, which are exposed to extreme environments.

Why don't all watches have this feature?

While effective, a screw-down crown isn't always necessary. Dress watches, worn in urban or professional settings, don't necessarily require such high levels of water resistance. Furthermore, a screw-down crown requires a specific construction of the Case which may slightly increase the thickness of the watch. This is why this technology is generally reserved for tool watches, designed to withstand the elements.

How to properly use a screw-on crown?

To ensure optimal sealing, here are some best practices:

• Always screw the crown back on after using it.
  
• Never handle the crown underwater or in a humid environment.
  
• Do not force if abnormal resistance is encountered: maintenance may be required.
  

These simple steps ensure the longevity of your watch and protect it from water infiltration.

The crown screwed on at Charlie Paris

At Charlie Paris, the screw-down crown is a symbol of technical expertise and a commitment to sustainability. It is a signature element of the collection Concordia, Our collection of 300-meter water-resistant dive watches is designed and assembled in France. This choice reflects our commitment to offering watches that are both aesthetically pleasing and built for adventure, without compromising on performance.

The screw-down crown is much more than a design detail: it's a guarantee of reliability and robustness, essential to watches built to last. At Charlie Paris, in particular, it embodies our watchmaking standards and our desire to accompany every moment of life, whether in the city or on the water.