This Rolex reference 326935 is the Sky-Dweller in Everose gold, Rolex's proprietary rose gold alloy, and one of the most complicated watches the brand makes. Introduced in 2012, the Sky-Dweller was Rolex's first watch to combine an annual calendar with a dual time zone — a genuine complication from a house better known for its restraint. The calendar needs setting only once a year, showing the month through twelve small apertures ringed around the dial and the date at three, while a second time zone reads off a central 24-hour disc; both are adjusted through the fluted Ring Command bezel, which turns to select each function. Driving it is the in-house automatic calibre 9001, chronometer-certified with a 72-hour reserve. The 18k Everose gold Oyster case measures 42mm in height and width with a thickness of 14.1mm, water resistant to 100m, its silver dial set with applied markers.