Adventurers Spirit The Explorer collection reflects Rolexs enduring connection to exploration and discovery. Designed for resilience and clarity, it has accompanied expeditions to some of the most challenging environments on Earth. Precision for Every Journey This 2018 model features a 42mm Oystersteel case with a fixed 24-hour bezel and a black dial. Powered by the calibre 3187 movement, it offers approximately 48 hours of power reserve and is fitted with an Oyster bracelet and Easylink extension.