An elegant watch for frequent travelers, the Sky-Dweller displays the time in two time zones simultaneously and has an annual calendar. The reference time, in 24-hour format, is shown via an off-center disc, and the local time is read using conventional center hands. The annual calendar, named Saros, automatically differentiates between 30- and 31-day months. It is operated by a patented mechanism and stands out for its innovative display: the months of the year are indicated in 12 apertures around the circumference of the dial, with the current month marked in red. The instantaneous date change is linked to the local time.

By operating its own exclusive foundry, Rolex has the unrivaled ability to cast the highest quality 18 ct gold alloys. They are made with only the purest metals and meticulously inspected in an in-house laboratory with state-of-the-art equipment before the gold is formed and shaped with the same painstaking attention to quality. Rolex's commitment to excellence begins at the source. This particular model was cast in ever-rose gold with a sought-after chocolate dial along with a beautiful alligator leather strap to create a luxurious but easily wearable 42mm watch. This particular watch is USED, but was worn with care so shows very little signs of use. This watch also comes with its full authentication papers and boxes.

Now, this watch could be found with its matching ever-rose gold oyster style bracelet, which of course will elevate the cost of the watch to match the level of metal. However, this particular watch comes with a brown alligator leather strap that makes a bit lighter wear than the metal bracelet. The watch is 42mm and sits well on any male-size wrist.

A fixed inverted red triangle on the dial points to the chosen reference time – the time at home or at the traveler’s usual workplace – on the off-center 24-hour disc. At a glance, this 24-hour display clearly distinguishes daytime hours from night-time hours in the other time zone. A deep red rectangle in one of the 12 windows around the dial indicated the current month, a striking characteristic of the Saros annual calendar. This ingenious mechanism simplifies life for the wearer of the watch, who no longer needs to think about adjusting the date at the end of a 30-day month. The annual calendar displays the correct date throughout the year. Only one adjustment is needed – on 1 March (February having only 28 or 29 days). The date is connected to local time and automatically changes according to the traveler's local time zone.

The Sky-Dweller is equipped with caliber 9001, a self-winding mechanical movement entirely developed and manufactured by Rolex. Introduced in 2012, it is one of the most complex calibers ever created by Rolex watchmakers. Nonetheless, it is engineered to ensure simplicity of use: a selector wheel on the outside edge of the 9001 ensures the interaction of the movement and the bezel of the watch to set the Sky-Dweller’s functions. Like all Rolex Perpetual movements, the 9001 is a certified Swiss Chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. Its architecture, in common with all Oyster watch movements, makes it singularly reliable.