Rolex's waterproof technology has always been at the forefront of the industry. As early as 1926, Rolex launched the world's first waterproof watch, the "Oyster" watch. With its patented screw-in crown and one-piece case structure, this watch became the most innovative product on the market at the time, laying the foundation for the waterproof performance of the watch. Today, Rolex has not only achieved a waterproof depth of 300 meters, but some professional diving models have even reached an amazing 3,900 meters, such as the Oyster Perpetual Deep Sea Challenge, which is guaranteed to be waterproof up to 11,000 meters. Such excellent waterproof performance is inseparable from Rolex's pursuit of excellence and strict control of every detail. For example, Rolex's Oyster case consists of an outer ring, bottom cover and winding crown that are screwed to the middle case, making the case completely sealed; the triple-lock crown has three sealing areas, which further enhances the waterproof performance; and for professional diving watches, it is also equipped with a helium exhaust valve. When the diver is decompressed in the hyperbaric chamber, this device can release excess gas in the case and reduce the excessive pressure accumulated inside to avoid damaging the watch. The continuous innovation and improvement of these technologies enable Rolex watches to operate normally in various underwater environments, making them the first choice for diving enthusiasts and professionals. http://bbdbuy.site/hot
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