The dive watch is the ultimate “tool” watch — tough, purpose-built, utilitarian — even if most examples never get near a coral reef. But while a good dive watch is resilient, it’s not invincible; even dedicated landlubbers need to keep in mind the watch’s particular features and vulnerabilities. Here’s what you need to know before you take the plunge, literally or financially.
1. If it is a manual mechanical watch, the mechanical watch should be wound regularly. It is recommended to wind the mechanical watch around 8pm.
2. If the arm movement of the automatic mechanical watch is insufficient, the watch needs to be wound manually, and the rotation of the crown needs to be controlled within 20 revolutions.
3. The automatic mechanical watch has not been worn for more than 40 hours, and it needs to turn the crown 20 times to start the drive system of the movement.
4. Regardless of the waterproof performance of the watch, you should try to avoid getting water, if it gets water, please wipe the water dry in time, and make sure the crown is locked at all times. It is best to replace the waterproof ring once a year.
Screw Down the Crown
Most dive watches feature crowns that screw into a tube fitted into the watch case, which, in turn, features a seal that prevents water from entering. But if the crown isn’t fully locked down when you go diving, water may find its way into the watch, possibly ruining the movement and resulting in a costly service.
Know Your Resistance
Standard 6425 from the International Standard for Organization defines a diver’s watch as “designed to withstand diving in water at depths of at least 100m.” If you’re not sure about your own timepiece, check the dial; if a watch is not rated to at least that standard, there’s a good chance it’s noted there. Under the century mark? A quick dunk in the pool is probably fine but repeated submergence is asking for trouble.
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