At 42mm, the Sky-Dweller's Oyster case features a monobloc middle case, solid case back, and a screw-down winding crown with Twinlock double waterproofness, delivering water resistance to 100 metres. The fluted, bidirectional rotatable Rolex Ring Command bezel frames a scratch-resistant sapphire crystal fitted with a Cyclops lens over the date, while the white dial is equipped with a Chromalight display offering long-lasting blue luminescence for high legibility.
Driving the watch is Calibre 9002 — a perpetual, mechanical, self-winding movement with dual time zones and an annual calendar. Functions include centre hour, minute, and seconds hands, a 24-hour display on an off-centre disc, an instantaneous annual calendar at 3 o'clock, month display via 12 apertures around the dial's circumference, and stop-seconds for precise setting. The oscillator features a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers, with a power reserve of approximately 72 hours. The movement is COSC certified to a precision of -2/+2 seconds per day after casing.
The Oystersteel Jubilee bracelet with five-piece links is secured by a folding Oysterclasp with an Easylink 5mm comfort extension link, rounding out a watch that balances sophisticated complication with everyday wearability.
