The impermeability test
Essentially the water resistance, which varies depending on the structure of the clock (the more the case is thicker and massive the more it is waterproof ) is not a permanent quality of the clock because the seals are subject to aging and wear.
High or extremely cold temperatures, cosmetics and solvents make the seals porous and fragile: and these conditions no longer provides water-resistance.
The degree of impermeability is usually indicated in atmospheres (1 atmosphere corresponds to about 10 meters of depth of immersion), however, these depths and their relative pressure correspond to the limits of the clock held in laboratory conditions.
During normal use the pressure at which the clock is subjected is often greater than that generated by the immersion depth and a simple shower can cause serious damage.
It’s better to use precautions when you are in water. For example, you should check that the crown is screwed tightly and you should avoid using the buttons of the chronograph.
Another good precaution is to check once a year at the service center the status of the various seals of the clock.
Do not neglect the maintenance of your watch, come and see us for a free quote with no obligation at our specialized laboratory.