Rolex, a Swiss watch manufacture headquartered in Geneva, is recognized the world over for its expertise and the quality of its products. Its Oyster and Cellini watches, all certified as Superlative Chronometers for their precision, performance and reliability, are symbols of excellence, elegance and prestige. Founded by Hans Wilsdorf in 1905, the brand pioneered the development of the wristwatch and is at the origin of numerous major watchmaking innovations, such as the Oyster, the first waterproof wristwatch, launched in 1926, and the Perpetual rotor self-winding mechanism invented in 1931. Rolex has registered over 400 patents in the course of its history. A truly integrated and independent manufacturing company, Rolex designs, develops and produces in-house all the essential components of its watches, from the casting of the gold alloys to the machining, crafting, assembly and finishing of the movement, case, dial and bracelet. Through philanthropic programmes and a broad palette of sponsorship activities, Rolex is also actively involved in supporting the arts, sports and exploration, and encourages the spirit of enterprise, as well as the conservation of natural environments.