What Is a Screw-Down Crown?
The screw-down crown is a specialized design feature that enhances a watch’s water resistance. Unlike a standard crown, which simply pushes into the case, a screw-down crown threads securely into the watch case, creating a tight seal. This innovation is critical in preventing water and dust from entering the movement.
How Does It Work?
The crown is fitted with a gasket and threading system. To adjust the time or date, the wearer unscrews the crown, making it accessible for use. Once adjustments are made, the crown is screwed back into place, re-establishing its protective seal. This mechanism is commonly found in dive watches and models designed for extreme conditions.
Why Is It Essential for Dive Watches?
For watches designed to withstand high-pressure environments, the screw-down crown is indispensable. It ensures water resistance at depths often exceeding 200 meters, making it a hallmark feature for professional-grade diving instruments. Proper maintenance and periodic gasket replacements are necessary to preserve its functionality.
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