Elegant, practical and unmistakably Patek Philippe, the reference 4936 brought the manufacture's pioneering Annual Calendar complication to a refined ladies' dress watch. Introduced in 2005, it is powered by the automatic Calibre 324 S QA LU, displaying the day, date and month through three apertures, together with a moon phase and 24-hour indication. Requiring adjustment only once a year, the Annual Calendar offers everyday usability while maintaining the mechanical sophistication for which Patek Philippe is renowned. Produced in white gold, yellow gold and rose gold, often with diamond-set bezels and beautifully decorated dials, the 4936 is admired for combining practical functionality with timeless feminine elegance.

The reference 4937 showcases Patek Philippe's celebrated World Time complication in an elegant ladies' timepiece of exceptional refinement. Introduced in 2011, it is powered by the ultra-thin automatic Calibre 240 HU, allowing the wearer to read the time in all 24 time zones simultaneously using the iconic rotating city disc and 24-hour ring. Distinguished by its intricate hand-guilloché centre dial, diamond-set bezel and graceful proportions, the 4937 demonstrates the manufacture's ability to unite technical innovation with decorative artistry. Produced in white gold and rose gold, it remains one of the most distinctive ladies' complicated watches in the Patek Philippe collection.