Patek Philippe Annual Calendar Chronograph

Complications is Patek's collection for watches built around one clever, genuinely useful feature, the level below its most extreme watchmaking but a world above a simple time-and-date. The stars here are the annual calendar, a mechanism Patek invented in 1996 that tracks the date and only needs correcting once a year, and the World Time watches, which show all 24 time zones at once, often over a beautiful enamel map. You'll also find chronographs, moonphases, and travel-time pieces, plus ladies' versions across the range. Think of it as the sweet spot: real horological substance you'd actually use day to day, without stepping up to a minute repeater. It's where a lot of collectors find their first serious Patek.