At 42 mm, the Oyster case of this Sky-Dweller is crafted in Yellow Rolesor, the Rolex combination of Oystersteel and yellow gold. A fluted, bidirectional rotatable Rolex Ring Command bezel surrounds scratch-resistant sapphire crystal with a Cyclops lens over the date. The screw-down winding crown features the Twinlock double waterproofness system, and the case carries a water resistance rating of 100 metres / 330 feet.
The champagne dial features a Chromalight display with long-lasting blue luminescence for legibility in low light. Month is indicated through 12 apertures around the dial's circumference, while an instantaneous annual calendar sits at 3 o'clock alongside a 24-hour off-centre disc for a second time zone — all functions managed through the Ring Command bezel.
Powering the watch is Calibre 9002, a perpetual, mechanical, self-winding movement with dual time zones and an annual calendar, offering a power reserve of approximately 72 hours and a precision of -2/+2 seconds per day after casing. The oscillator uses a paramagnetic blue Parachrom hairspring and Paraflex shock absorbers. The three-piece solid-link Oyster bracelet in Yellow Rolesor fastens with a folding Oysterclasp and an Easylink 5 mm comfort extension link.
