Are Watches Really Waterproof As The Manufacturer Promises? What Does Water Leak Anyway?
In 1927 Mercedes Gleitze crossed the English Channel from Calais to Dover. She wore a Rolex, which was provided with a screwed caseback, and a screw-down crown, to be as resistant to the water. They then got the name oyster (Engl .: Oyster). The channel crossing was so that the public evidence, while public advertisement for the quality of a watch, which seemed to defy all elements.
The Oyster case has been optimized and subsequently formed the basis for the development of diving watches which took the market from 1953rd These were already up to 100 meters water resistant, which even doubled in a very short time. On the development of waterproof watches and extreme divers, researchers and Milität were instrumental in that could help the developers through their requirements and experiences with the difficult conditions.
But how exactly I test the water tightness? And what do the individual gradations?
A watch is generally considered tight if the housing neither water nor can penetrate dust.
The value of the water resistance is expressed in atmospheres or meters for the ability to keep water out. Is a clock, so it is designed for up to 3 bar waterproof (water resistant) for everyday use, but not for example, for diving, but it keeps splashes stand.
If a watch up to 5 or 10 bar water resistant like a retro timepiece, you can easily go take a shower or swim with it.Assuming regular snorkeling or diving, a sport or diver watch is recommended at 10 or 20 bar water resistance. Most sports watches are up to 10 bar water resistant, which corresponds to about 100 meters and can be used for sports, free time as well as professional uses.
Particularly important is the care. The outer parts of the clock, which are exposed and are often used, are subject to wear.These include the winding crown and the sealing ring, which means that it is difficult always to achieve an absolute water tightness.
Therefore, a waterproof watch must be tested using special equipment regularly. It is useful to also change the sealing ring every year. In addition, the watch should be rinsed off after swimming in salt water with fresh water to prevent corrosion increased.
Many know the phenomenon that Kodensflüssigkeit forms in the AM. This is done by extreme temperature changes when, for example, jumps straight into the cool water after sunbathing, and should be removed as soon as possible.