Egyszer megtették. Azóta az összessel megteszik laborban:
"To guarantee the water resistance of the Rolex Deepsea divers' watch to the extreme depth of 3,900 metres (12,800 feet), Rolex tests every single one made in a specially designed high-performance tank. This stainless steel hyperbaric tank is cast in a single piece and weighs 1.3 tonnes. It simulates the pressure at 4,875 metres (16,000 feet) below sea level, some 25 percent greater than the depth indicated on the dial. At this depth, the force exerted upon the watch is equivalent to a weight of 4.5 tonnes. This test could be destructive, meaning that the slightest weakness in a watch would cause it to implode. Obviously, all Rolex Deepsea watches offered for sale have survived it."
Ez a Deepsea.
A többinél:
"All Oyster Perpetual models are equipped with the Oyster case, providing the movement with optimal protection against water, dust and shocks. Before being shipped, every Oyster watch is immersed in water and subjected to a pressure 10 percent greater than that found at the depth to which it is guaranteed – 25 percent more in the case of divers’ watches. This means that every Rolex Oyster is not just capable of resisting at least 100 metres of water pressure. It has actually done so."
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trey @ gépház