10 KEY POINTS FOR THE WATERPROOFNESS OF A TIMEPIECE

Water resistance is one of the most important features to ensure the durability and functionality of a watch, especially for those who lead an active lifestyle or for those who love water activities. But when we talk about waterproof watches, what does it really mean? What are the features to consider and how can we ensure that our timepiece remains protected from water?

The Essence of Waterproofness: When a Watch Breaks the Barriers of Water

A watch is defined as “waterproof” when it has a case that is water and dustproof. Swiss law states that in order to define a watch as waterproof , it must be subjected to rigorous laboratory tests.

Synonyms for “waterproof” are the French “ètanche” and the English “water resistant”: these indicate that the case is waterproof up to a pressure of 3 atmospheres, corresponding to about 30 meters of depth. However, it is advisable to avoid bathing and limit contact with water to simple superficial splashes.

Watches with a resistance of 5 atmospheres (50 meters) can, however, be used for short surface swims. For scuba diving , a watch with a resistance of at least 10 atmospheres (100 meters) is required, which is called “diver” rather than “waterproof”.

Introduced in 1953, the Rolex Submariner was the first diving wristwatch waterproof to a depth of 100 metres – now to 300 metres.

Waterproof Test: 10 Key Points and Tips

Whether you are trying to understand the technical specifications or simply want to take precautions to preserve your precious timepiece, this information will provide you with a comprehensive guide on how to manage and maintain the water resistance of your watch.

• What does water resistance mean: Water resistance indicates the ability of a watch to resist the ingress of water into the case;

• How to tell if a watch is waterproof: Check the dial or case back for specific abbreviations that indicate the degree of waterproofness. Water resistance can be indicated in different units of measurement: in bar (air pressure), in ATM (atmospheres) or in meters;

• What is the difference between “diving” and “water resistant” watches: “diving” watches resist a pressure of at least 10 bar (100 metres), while “water resistant” watches have a lower resistance, which is why they are not suitable for prolonged immersions;

• Where to carry out the waterproof test: to test the waterproofness of a watch you need to contact authorized laboratories, such as the Pisa 1940 Flagship Store Laboratory ;

• Pre-dive checks: Before submerging your watch in water, make sure the crown is screwed down tightly onto the case. If your watch has chronograph buttons, make sure they are also well sealed before exposing them to water;

• Maintenance after exposure to salt water: After immersion in salt water, it is advisable to rinse the watch with fresh water to prevent salt corrosion;

• Replacing the gaskets: during the ordinary cleaning and maintenance of your watch , replace the gaskets to maintain water resistance over time;

• Diving watches and lifestyle: today many brands offer collections of waterproof watches as part of their catalog, combining functionality and lifestyle;

• Additional protections: A collateral feature of a waterproof watch is that it protects the mechanism from any external agents other than water, such as humidity, dust and impurities;

• A bit of history: the Rolex Oyster case represents the pinnacle of modern watchmaking history. Invented by Rolex in 1926, it was the world's first waterproof wristwatch case, thanks to its patented system of bezel, case back and winding crown that screwed onto the case middle. A symbol of waterproofness and robustness, a model of proportions and elegance, this case successfully combines form and function, whatever the material used to make it: Oystersteel, 18 ct gold or 950 platinum. Experience the Oyster Perpetual Sea Dweller , designed by Rolex for saturation diving: all Oyster Perpetual watches are direct descendants of the original Oyster, the world's first waterproof wristwatch.

By following these simple steps, you will ensure that your watch remains protected and functional, withstanding the challenges of water and environmental conditions.