Water resistance is a crucial feature for any watch, whether it is meant for everyday wear or for specific water activities. A water-resistant watch protects the internal mechanism against water, dust and other contaminants. In this article we will explore how to keep your watch water resistant, with essential advice and precautions to bear in mind.
Understanding water resistance ratings
Before turning to the precautions, it is important to understand the different water resistance ratings given by manufacturers:
Water Resistant: indicates minimal protection against splashes.
3 ATM / 30 metres: resistant to rain and splashes.
5 ATM / 50 metres: can be used in the shower or for light swimming.
10 ATM / 100 metres: suitable for swimming and snorkelling.
20 ATM / 200 metres and above: suitable for professional scuba diving.
Advice for maintaining your watch's water resistance
Have your watch checked regularly
It is advisable to have your watch's water resistance checked at least once a year by a professional watchmaker. Gaskets deteriorate over time and must be replaced periodically.
Avoid diving in or water sports
Sudden changes in pressure can deform components and compromise the effectiveness of the gaskets; they can also generate more pressure than the watch can withstand. Diving into water can subject a watch to as much as 20 ATM.
Avoid hot water and chemicals
Exposure to hot water, soap, chemicals or perfume can damage the gaskets. We recommend removing your watch before showering or going into a sauna.
Make sure the crown is screwed down
The crown (the setting button) must be screwed down or pushed fully in before any immersion in water. A poorly secured crown is one of the main causes of water getting into a watch.
Avoid thermal shock
Sudden changes in temperature can cause the watch's components to contract and expand, compromising water resistance. Avoid moving quickly from a very hot environment to a very cold one, and vice versa.
Clean your watch after immersion in salt water
If you wear your watch in salt water, rinse it in fresh water after every immersion. Salt can corrode the gaskets and other metal components, reducing water resistance.
Do not operate anything under water
Do not use the pushers or the crown of your watch under water. Doing so can let water into the case, even if the watch is rated as water resistant.
Do not hold the watch directly under a running tap.
The pressure of tap water is enough to reduce the water resistance of a watch designed for everyday use.
Signs that water resistance has been lost
Condensation under the crystal
If you notice condensation inside your watch, it means water has got in.
Mist or droplets inside
Water droplets or mist on the dial are clear indicators of a water resistance problem.
Irregular running
If your watch starts running erratically after exposure to water, it may have suffered internal damage from moisture.
For diving, use only watches designed for diving.

Keeping your watch water resistant is essential to protecting its internal mechanism and extending its life. By following this advice and taking the necessary precautions, you can enjoy your watch fully, even in and around water. Remember to have your watch checked regularly by a professional to guarantee that it runs well and stays water resistant.
By applying these measures, you can make sure your watch stays in perfect condition, whatever conditions it is exposed to.