Earlier today, Rolex unveiled the Sky-Dweller, an all-new timepiece with dual time zones and an annual calendar.

The 42 mm diameter Day-Date case is available in either white gold, yellow gold, or rose gold. Powering the timepiece is a new self-winding in-house movement, caliber 9001. The 4Hz movement is a COSC-certified chronometer and features a Rolex Parachrom balance spring with has 40 jewels and has a 72-hour power reserve.

The Ring Command Bezel, which consists of no less than 60 components, allows the wearer to select any of three positions, which in turn allows for each function to be set: date, local time, or home time. The selected function can then be rapidly adjusted in either direction, forwards or backward, using the winding crown.

The Sky-Dweller features an innovative annual calendar (without the day). It automatically differentiates between 30 and 31-day months. It only requires one adjustment per year on March 1st. The date is indicated at 3 o’clock and the month is indicated by one of twelve apertures around the chapter ring.

Posted by:Jason Pitsch

Jason Pitsch is the Founder of Professional Watches. He appreciates good craftsmanship in everything from architecture to automobiles to cameras to clothing. Yet his focus for the past decade has remained consistent on covering just one type: watchmaking.