Global Functionality The Sky-Dweller is Rolexs most advanced timepiece, designed for frequent travellers and global citizens. With its dual time zone display and annual calendar, it combines technical sophistication with intuitive usability. Understated Luxury This reference 326139, from 2016, features a 42mm case in 18ct white gold and a fluted, rotatable Ring Command bezel. The ivory dial displays local time via centre hands and reference time via an off-centre disc. Powered by the calibre 9001 automatic movement, it offers a power reserve of approximately 72 hours. The watch is paired with a brown alligator leather strap and secured with an Oysterclasp.