Rolex watches have an unrivaled history when it comes to watch manufacture, and the company are responsible for many innovations in watchmaking, the water resistant case, and the self-winding mechanism the first wristwatch with a date on the dial; the first watch to show two time zones at once; and the first watchmakers to earn chronometer certification for a wristwatch. Plus, Rolex still holds the record for the most certified chronometer movements in the category of wristwatches.

For Rolex, what is the most common and what the brand so special is its oyster type casing, it is also a symbol of brand waterproof performance. Oyster type case creates an important milestone in the history watchmaking in the contemporary society. This device was invented by Rolex in 1926, equipped with the patented rotating watch outer ring system, bottom case and middle crust crown, is the world’s first waterproof casing used in wrist watch. Now, watch case sealing structure can ensure that all oyster type wrist watch waterproof depth can be at least 100 meters, and the Rolex Submariner Replica diving watches can be up to 300 meters , and Rolex Deepsea type can be as deep as 3900 meters .

Rolex uses the highest steel grade on the market – the 904L stainless steel alloy, which is primarily used in the chemical industries, in the aerospace industry, and in the world of high-technology. The 904L stainless steel alloy has a high corrosion resistance, and has good formability and weldability. It can resist temperatures of 450 degrees Celsius or 824 degrees Fahrenheit. The steel grade is meant to be used for the most demanding situations, and highly corrosive conditions. Few steel grades can match the 904L stainless steel alloy used by Rolex. Plus, Most modern Rolex timepieces are equipped with a new clasp system called “glidelock” which can be used to adjust the bracelet on the fly without having to use any tools whatsoever. This is completely unique to Rolex.