At 42 mm, the Sky-Dweller's 18 kt yellow gold Oyster case is built around a monobloc middle case with a screw-down case back and a screw-down Twinlock winding crown, delivering water resistance to 100 metres. A scratch-resistant sapphire crystal with a Cyclops lens over the date sits above the champagne dial, whose Chromalight display provides a long-lasting blue luminescence for low-light legibility. The fluted, bidirectional rotatable Rolex Ring Command bezel serves as the intuitive interface for the watch's layered calendar functions.
Powering the Sky-Dweller is Calibre 9002, a perpetual, mechanical, self-winding movement manufactured by Rolex. It carries dual time zones, an instantaneous annual calendar at 3 o'clock, and a month display conveyed through 12 apertures around the dial's circumference. The oscillator features a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers, with bidirectional winding via a Perpetual rotor and a power reserve of approximately 72 hours. Precision is rated at -2/+2 seconds per day after casing, and the movement is COSC certified.
The watch rides on an 18 kt yellow gold Oyster bracelet composed of three-piece solid links, secured by a folding Oysterclasp with an Easylink 5 mm comfort extension link for a refined and adaptable fit.
