Twenty years of the Annual Calendar, celebrated by Patek Philippe with the latest evolution of this fortunate typology, Ref. 5396, with a Calatrava case (over the two decades it has also been declined in the forms of the Gondolo and Nautilus) in a 38.5 mm diameter. Round, in white gold or rose gold, with a calibre 324 S QA LU 24H automatic mechanical movement inside. The same diameter, 38.5 mm, also applies to the case of the new Universal Time Ref. 5230, designed by the Maison to adapt to recent changes in the 24 time zones (Dubai replaces Riyadh, Brisbane takes over from Nouméa, Moscow adopts UTC+3 time in place of the previous UTC+4). In white or pink gold, it adopts the ultra-thin self-winding 240 HU calibre with a 22-carat gold mini-rotor. An extra millimetre (39.5), finally, for the Universal Time Chronograph Ref. 5930, which combines, for the first time in the brand's current models, universal time and chronograph. The case is in white gold and the calibre is the CH 28-520 HU automatic chronograph movement with column wheel and vertical coupling.
