Timeless Design The Oyster Perpetual collection reflects Rolexs commitment to precision, simplicity and enduring style. With its clean lines and robust construction, the model continues the legacy of the original waterproof Oyster case launched in 1926. Refined and Precise This reference features a vivid blue dial with baton hour markers and a smooth domed bezel in Oystersteel. The 36mm case is powered by the calibre 3130 automatic movement with a 48-hour power reserve. Completed with an Oyster bracelet and Oysterclasp, this example offers a confident and contemporary take on Rolexs classic design.