In theory, every Rolex watch, except for the Cellini collection, is technically capable of being used for diving. Or, more precisely, any modern Rolex model with an Oyster case can survive recreational scuba depths, regardless of whether it is considered one of the brand’s legendary dive watches, such as the Rolex Submariner or the Sea Saucer.
The absolute limit of non-decompression dives, those that don’t require a safe stop on the way back to let your body metabolize some of the nitrogen that seeps into your bloodstream, is between 30m-40m, depending on which training facility’s guidelines you follow. Of course, it would be a brave person to take their solid gold replica Rolex Day-Date to explore the reef or time their next underwater excursion with a Sky-Dweller. However, in theory, the 100-meter water resistance offered by either of these models should be up to the task. 
As a result, all the different Submariner models made up until the 1980s, as well as the original version of the Sea-Dweller, were technically non-compliant with modern ISO standards simply because of their bezels, and this also applies to any dive watch without a unidirectional rotating bezel, regardless of its actual water resistance rating.
However, if this is a minor blot on the most famous dive watch in all of horology, it has been more than made up for by the flat-out ability of Rolex’s various dedicated dive replica watches. Rolex’s three dive watches have suffered incredibly at the hands of the brand’s engineers, all designed to ensure they remain at the forefront of what’s possible – even though the chances of any of them stepping onto a submarine are slim to none.
Today, Rolex’s line of tool watches is hardly ever used for the purposes for which they were initially intended. Yet, just as few Ferrari drivers would drive their machines in the real world, it’s nice to know that they can always get you out of trouble when needed, and they have evolved over more than half a century as wearable examples of Rolex’s technical competence in dive watch design.
Every fake Rolex Oyster model is pressure tested from the Air-King to the Yacht-Master to ensure water resistance. For all the different models except the Diver, this evaluation is carried out through a series of multiple tests to ensure that the watch is water-resistant to a minimum depth of 100 meters, with an additional margin of 10% during the test itself to ensure that it can successfully reach the established depth rating.
How Rolex tests its diving watches?
