Essential Rolex Form The Oyster Perpetual is a pure expression of Rolexs watchmaking heritage, offering simplicity and precision in equal measure. Its enduring design and robust construction have made it a cornerstone of the collection for decades. Refined Proportions This 36mm model in Oystersteel features a silver dial and domed bezel, paired with an Oyster bracelet and Oysterclasp. Powered by calibre 3130, it provides approximately 48 hours of power reserve, delivering reliability in a timeless design.