The Rolex Sky-Dweller is an annual calendar invented in 2012.The Rolex Sky-Dweller contains the in-house Caliber 9001. The second time zone is indicated by an off-center, rotating 24-hour disk. Local time, indicated by the center- mounted hands, can be adjusted quickly when you change time zones by setting the hour hand forward or backward in one-hour increments. The minutes, seconds, and second-time-zone indicators are not affected during this operation.
The movement has 380 components and is protected by seven patents, four of them new.The case is 42 mm in diameter and water-resistant to 100 meters. This Rolex Sky-Dweller comes in white gold and leather straps, and in a version with case and bracelet made of Rolex’s proprietary Everose gold.
Rolex chose the name because it brings to mind the revolutions of the Earth and moon, which are like the motion of the satellite wheel with its four fingers. The Rolex Sky-Dweller calendar has an unusual month display. The hour numerals correspond to the 12 months of the year. Next to each numeral is a window. The window for the current month is black; the other 11 windows are white.