Annual Calendar 5205 White Gold / Blue

The Patek Philippe Annual Calendar 5205G-013 debuted in 2018 and represents a contemporary execution of the brand’s patented Annual Calendar complication, first introduced in 1996. The watch is housed in a white-gold case measuring 40 mm in diameter and 11.36 mm in thickness. The case features a concave bezel, recessed flanks, and skeletonized lugs. Water resistance is rated to 30 metres, and a sapphire crystal case back is fitted. The dial is finished in sunburst blue with a black-gradient rim. Three apertures arranged along the upper arc display the day, date, and month. A white-gold frame highlights the date window. At 6 o’clock, the dial integrates a combined 24-hour indication and moon-phase display. Time is indicated by faceted white-gold dauphine-style hands with white luminescent coating, paired with applied white-gold faceted baton hour markers. A central sweep seconds hand is included. Powering the watch is the self-winding calibre 26-330 S QA LU 24H. The movement measures 32.6 mm in diameter and 5.8 mm in thickness, comprises 339 components and 34 jewels, and operates at a frequency of 28,800 semi-oscillations per hour (4 Hz). It drives the Annual Calendar mechanism, requiring correction once per year at the end of February, and provides a power reserve of approximately 35 to 45 hours. Winding is via a 21K gold central rotor. The movement features a Gyromax balance, a Spiromax balance spring, and bears the Patek Philippe Seal.