The Oyster collection was built on the success of the original Oyster model invented and patented by Rolex in 1926. As the first waterproof wristwatch in the world, it played a pioneering role in the development of the  modern wristwatch. Over the years, the Oyster became the  proud bearer of many other innovations such as self-winding by means of the Perpetual rotor – that defined the identity of the different models, forged Rolex’s reputation for excellence and often went on to set watchmaking  standards

Rolex is  now introducing updated versions of  its  quintessential Oyster Perpetual model in 31 and 36 mm featuring exclusive new dials. The purest expression of the Oyster concept and having no other function other than a clear, accurate time display, the Oyster Perpetual comprises of the renowned Rolex waterproof Oyster case and the self-winding Rolex Perpetual movement famed for its precision and reliability. This model stands out with its new dials in elegant and sporty colours.

The  watch’s Oyster case is waterproof to a depth of 100 metres (330 feet). The  characteristically shaped middle case is crafted from a solid block of corrosion-resistant steel. The fluted case back is hermetically screwed down with a special tool exclusive to Rolex. The winding crown, fitted with the patented Twinlock double waterproofness system, screws down securely against the case.

The 36 mm Oyster Perpetual is equipped with calibre 3130, a self-winding mechanical movement.  The oscillator, the true heart of the watch, has a blue Parachrom hairspring patented and manufactured by Rolex in an exclusive alloy of niobium and zirconium. Insensitive to magnetic fields, the Parachrom hairspring offers great stability when exposed to temperature variations and remains up to 10 times more precise in case of shocks than a traditional hairspring.