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Waterresistance Watches



All watches have some sort of water resistance which is usually listed on the watch cover or dial.

*Caution is needed when the watch is not waterproof, which means it should NOT come into contact with water, as there is a serious risk of damage.

Can I put my watch on when I shower? What are atmospheres (atm) and bars? These and many other questions about watch waterproofing and what you can do to protect your watch.

What does it mean if it says "water resistant" on the lid of my watch?

If you only see the word "water resistant" on a wristwatch, without a number or any other indication next to it, it means that nothing will happen if it accidentally comes into contact with water. Is the watch resistant to rain or hand washing. (Be careful that it is one thing to get wet from a simple rain while wearing the watch on our wrist, and another to wear it in a downpour while simultaneously driving a motorcycle, the pressure the watch receives is much greater in the second case!) Nevertheless, it will not we had to wear such a watch while swimming or showering.

What are atmospheres (atm) and bars?

They are measurements used by the watch industry to determine the pressure a watch can withstand, not the depth a watch can be worn! However, special care is needed, as this does not mean that you can put a watch with this indication ten meters below the surface of the sea. ATM corresponds to atmospheres, 1atm corresponds to 10 meters or 30 feet. Bar is an analog unit of measurement where 1 bar equals 1 ATM.

How many bars does my watch need to be suitable for swimming?

According to the diagrams for the waterproofness of the watches and what each category of the watches corresponds to. It is preferable for a watch to be at least 10 bar so that we can do one time with our watch in the sea without worrying about lucky sudden movements and more pressure that it can receive while using it at sea.

What more does a watch with 20bar, 30bar or even 100bar water resistance offer us?

For the majority activities of an average user a watch with a water resistance of 10 bar is sufficient.

But there are also watches that are made to withstand much more pressure. If we want to wear our watch when doing water sports, if in the summer we like to do long diving, diving, snorkeling and anything else that can push our watch to more extreme situations, then it would be good to choose a watch with water. . resistance at 20 bar.

If the use we will make of our watch is for diving at a great depth and for a long time with oxygen bottles and special equipment, then watches with 30 bar and above are one-way. Now with the use of suitable metal alloys, special constructions in watch cases and modern sealing methods, watch manufacturers have succeeded in offering watches with water resistance of 100 bar and even more. Now with the use of suitable metal alloys, special constructions in watch cases and modern sealing methods, watch manufacturers have succeeded in offering watches with water resistance of 100 bar and even more! Very impressive in terms of engineering and construction but of no practical benefit since such pressure is extremely developed for a strong to be subjected to, but it is a demonstration of the abilities of a watch company to manage to offer the greatest possible watertightness to its watches.

Is the watch waterproof permanent? Does the waterproofness of the watch disappear when we open it?

The water resistance of a watch is affected by several factors and it certainly does not remain the same in a watch that has just come off the production line as the water resistance of the same watch that has been worn regularly for years and has not been serviced.

The gaskets, rubber "o-rings", the crown of the watch and the buttons (in any watches that have them) are altered by the passage of time, the exposure of the watch to the weather, by the saltiness of the sea, by the steam, the various shampoos, sunscreens and generally anything else we might use when wearing our watch.

This is why we need to regularly maintain the watertightness of the watch.

Therefore, the tightness is not "lost" when we open a watch to change a battery for example, although opening and closing a watch involves the possibility of further wear of the flanges so it is recommended to maintain the tightness every time you change the battery .

Can I shower while wearing my watch?

It is recommended to avoid using our watch in the sanitary bathroom. Shampoo, water vapors, hot water, soaps and other liquids that we use in the bathroom are very corrosive to the sensitive parts of a watch, resulting in a faster deterioration of the elements that make our roll waterproof.

My watch says 100 meters 10 ATM waterproof can I use it in the pool?

Diving in the pool causes a sudden change in pressure on the watch, even if it lasts for a few seconds, this can cause a significant shock to our watch if it is not made for diving.The waterproofness of a watch is about pressure, the moment the watch comes into contact with the surface of the water there is a sudden change in pressure, if this pressure you apply is greater than what our watch can withstand it can penetrate water. Repeated diving will eventually take the pressure resistance of our watch to the extremes and beyond, causing water to seep into our watch case and mechanism.

What should I do if my watch get water?

In the event that we find that our watch has get water, we should take it to a watch repair shop as soon as possible so that it can be dried, cleaned and the necessary maintenance done on the mechanism and the watch's tightness.

If it is not possible to visit a watch repair shop immediately then you should place the watch under a heat lamp, on a warm surface or on top of a radiator. The heat will force the moisture into the watch dial and glass away from the most sensitive parts of the watch mechanism. Continue to wear the watch on your hand so that the heat of your hand keeps the moisture on your watch face.

What should I watch out for at sea with my watch?

During swimming we should not press the buttons or open and unscrew the crown unless our watch has special specifications that allow us such use.

Finally, when we get out of the water, we make sure to rinse the watch with fresh water to remove the salts and watch out for any moisture on the dial of our watch.


The waterproofing of the watch concerns the use of water at natural temperature and not hot, because the hot water damages the watches of the watch, as a result of which moisture penetrates inside, causing corrosion in the mechanism and the guarantee does not cover you

indicator waterresistance



3bar ή 3ATM ή 30m ή 99FT

Suitable for daily use. Resistant to splashes, raindrops, sweat.

Not suitable for showering, swimming, diving, fishing or any work related to water.

5bar ή 5ATM ή 50m ή 165FT

Suitable for hand washing, cold water shower, heavy rain, river rafting, fishing and water related work.

Not suitable for water pressure swimming and diving

10bar ή 10ATM ή 100m ή 330FT

Suitable for hand washing, showering, swimming, snorkeling, sailing and simple water sports.

Not suitable for diving

20bar ή 20ATM ή 200m ή 660FT

Suitable for professional sailing, marine work and freediving.

Suitable for diving

Diver’s 10bar ή 10ATM ή 100m ή 330FT

They cover the minimum ISO standards, free diving at shallow depths where the use of Sun (gas) is not necessary.

Usually Diver's 100m and Diver's 150m on older watches Without the special marking

Diver’s 20bar ή 20ATM ή 200m ή 660FT

Suitable for freediving at depths where the use of Sun (gas) is not required.

Typical category of modern dive watches

Diver’s 300+ helium safe

Suitable for deep dives, where the use of Helio (gas) is required.

Watches designed for diving using Helios mixture are specially marked.

Attention: No watch Is waterproof in hot water.

Attention: After each battery change recomended to sealing the watch


Attention: All smart watch with IP65 - IP67 - IP68 certification are not suitable for swimming or shower. (Suitable for dust and accidental contact with water)