Global Companion The Oyster Perpetual Sky-Dweller was designed for frequent travellers. Featuring the Rolex Saros annual calendar and Ring Command system, it simultaneously displays two time zones, along with the date and monthall adjustable via the bezel. Dual-Time Utility This 2017 reference features an intense white dial housed in a 42mm case crafted from Yellow Rolesora combination of Oystersteel and yellow gold. The fluted, rotatable bezel enables intuitive control of the watchs functions. Powered by the calibre 9001 automatic movement, it offers a 48-hour power reserve and is fitted with an Oyster bracelet and Oysterclasp with Easylink extension.