The Oyster case of the Oyster Perpetual models is guaranteed waterproof to a depth of 100 metres (330 feet). Its middle case is crafted exclusively from a solid block of Oystersteel, a particularly corrosion-resistant alloy.

Today, if a Rolex watch has the words “Oyster Perpetual” on the dial, it means that the watch has an Oyster case with a screw-down caseback, which offers a minimum water-resistance rating of 100 meters (dive watches have higher depth ratings), and that it is automatic-winding due to its Perpetual movement.

The Oyster Perpetual is the brand's most accessible, entry-level watch. Because it can be styled in dressy or casual environments it is often seen as the perfect 'one-watch' for new collectors. New models retail under $6,000 for a 41mm model.

The Rolex Oyster Perpetual 41mm is one of the most iconic watches in history and continues to be sought after by collectors and luxury watch enthusiasts alike. Its timeless design and reliable performance make it an excellent choice for anyone looking for a classic timepiece that will last them for years to come.

The Oyster Perpetual models are equipped with either calibre 2232 (Oyster Perpetual 28, Oyster Perpetual 31 and Oyster Perpetual 34), or calibre 3230 (Oyster Perpetual 36 and Oyster Perpetual 41), self-winding mechanical movements entirely developed and manufactured by Rolex.

So the Oyster Perpetual can be used in water, but it still doesn't compare to the capabilities of the Submariner. On the other hand, “Perpetual” came from the self-winding movement that allows the watch to run forever, so long as the wearer is active and moving.

The Rolex movement is called 'oyster perpetual movement' and refers to the timepiece's ability to run on the energy of the wearer's movement instead of having to be wound.

Rolex watches The Oyster Perpetual is defined by its hermetically-sealed Oyster case and its self-winding Perpetual movement. Oyster Perpetual watches display the time with running seconds and do not have any additional features such as a date display. 'Oyster Perpetual' is used as a prefix to many Rolex watches.

1. Turquoise Blue aka “Tiffany” The Rolex Oyster Perpetual turquoise blue is the most sought-after watch in the collection. The colour is reminiscent of the brand Tiffany & Co., which is why this model has gained 'The Rolex Tiffany' nickname.

A Rolex watch not only exudes exceptional craftsmanship but also holds its value incredibly well. Rolex has been a pinnacle of precision & prestige in the watch industry for over a century. The brand's timeless design & unparalleled quality have created a cult-like following among collectors & enthusiasts.

Rolex uses only the finest materials, such as 18-karat gold & diamonds, to create their watches. Every detail is carefully considered, from the design to the movement, ensuring that every watch is a stunning piece of jewelry & a precision timepiece that will last for generations.

1. Calibre 3135 – A Genre Defining Automatic Calibre. No list of the most important Rolex calibres could ever be truly complete without mentioning the 3135. It's a movement that definitely couldn't be described as just a simple calibre with a total of 31 jewels.