![]() Thus it is best understood as a test whether there is any leaks. But it cannot specify the level of pressure applied and can only prove a watch is airtight to a certain degree. A dry test is safer in general, as no water is involved. These tests all have its place in testing water resistance. If any water found its way into the case in the wet test previously, it will reveal itself as condensation on the underside of the crystal. The watch is heated, and then a cold drop of water, or ice, is placed on the crystal. After wet test, an additional test called condensation test can be done. Any leaks are revealed by air escaping the watch as bubbles. Wet test, on the other hand, is done with a pressure tester, by pressurizing the chamber before placing the watch into water, and then depressurizing the chamber with the watch submerged in water. Dry test, or something referred to as air test, is done with a vacuum tester, by measuring the amount of warping of the crystal in a vaccum chamber. Water resistance tests can be divided in two broad categories: dry test and wet test. It’s simply putting pressure on the watch and see if it can withstand. With that in mind, it’s good to know that water resistance test isn’t rocket science. That’s why many watch people have a water tester in their arsenal - you want to be very, very sure before taking your watch to the pool party tomorrow. You don’t want to go to beach with your precious dive watch only to find out in the worst way possible that the gasket has failed. This comes as no surprise as an important component of water seal, a gasket, naturally degrades. With this boom of technology comes an increasing need to verify the water resistance capability of your watch. And then of course you have water resistant powerhouse like Omega Ultra Deep Professional, which has a staggering depth rating of 15,000M. But even a dress watch like Rolex Cellini nowadays has a WR rating of 10ATM. The first Rolex Oyster was quite the rage being the first waterproof watch in history. Water resistance technology has progressed by leaps and bounds for the last decades.
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