Sea Dweller Deep Sea in Steel with Blue Dial-116660usedblueJamesCameron-on Oyster Bracelet with Blue Black James Cameron DialRolex is easily the most famous luxury watch brand in the world. Despite its fame the companys early history is little known. In 1905 Hans Wilsdorf and Alfred Davis established a watch business called Wilsdorf and Davis in London England. The company imported Swiss movements and cased them in England to be sold by jewelers. Three years later the name was changed to the easily pronounced Rolex. In 1919 Wilsdorf moved Rolex to Switzerland. Watches at this time were susceptible to damage from dust and moisture. To address this issue Rolex pioneered the use of a hermetically sealed case dubbed Oyster for its water resistance. The company marketed this feature by placing its watches in aquariums and advertising the channel swim of Mercedes Gleitz who wore a new waterproof Rolex. The Oyster became the Oyster Perpetual when Rolex patented a selfwinding mechanism in 1931. Rolex is credited as producing the first chronometer wristwatch with an automatically changing date display and as one of the first watchmakers to produce a dive watch. This dive watch the Submariner was famously worn by James Bond in the earliest films. Rolex is an independent manufacturer which makes almost every component inhouse. It is owned by the Hans Wilsdorf Foundation a charitable trust established in 1944. Rolex is the largest watch brand by market share producing upwards of one million watches every year. The company is synonymous with prestige quality and durability. All modern Rolex movements bear the Superlative Chronometer specification. Rolex not only regulates its watches to the exacting requirements of the independent Official Swiss Chronometer Testing Institute COSC but further ensures movement accuracy of no more than plus or minus two seconds deviation a day. Most collections offer watches in several configurations which feature varied case sizes bracelets dials and metals. The Oyster Perpetual is the simplest of Rolexs collections. Although made to the same high standards The Oyster Perpetual solely features hours minutes and seconds. The Rolex Datejust is at once both classic and modern. The iconic versatile design has been emulated but never matched. The Ladies Datejust Collection offers the same model in more feminine variations. The Oyster Perpetual Date has a time and date movement but was offered in a 34 millimeter case diameter. Exclusively prod