Annual Calendar 5205 White Gold / Blue

In Context

At 40.2 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. At 11.36 mm thick it is about average for a modern wristwatch. The case back is open, so the movement is visible without taking the watch apart, and the sapphire crystal will resist everything short of deliberate abuse. Rated to 30 m, it is protected against rain and splashes and nothing beyond that.

The movement winds itself from the motion of your wrist. 45 hours of reserve carries it overnight, but not through a weekend in a drawer. At 28,800 vph the seconds hand advances 8 times a second.

5205G-013 is one of 3 executions of the 5205G base reference. Underneath they are the same watch; what separates this one is a blue dial and a white gold case. Beyond the time it carries an annual calendar.

Caliber 26-330 S QA LU 24H is a self-winding movement equipped with Patek Philippe’s patented annual calendar mechanism, displaying the day, date, and month through apertures. Additional indications include a moon-phase display, a 24-hour indication, and central sweep seconds. The movement measures 32.6 mm in diameter and 5.8 mm in thickness and is composed of 339 components, including 34 jewels. It operates at a frequency of 28,800 semi-oscillations per hour (4 Hz) and provides a power reserve ranging from approximately 35 to 45 hours. Automatic winding is ensured by a central 21-carat gold rotor. Timekeeping is regulated by a Gyromax balance in combination with a Spiromax balance spring. The movement is finished and certified in accordance with the Patek Philippe Seal.

2 other watches in the library run the Patek Philippe 26‑330 S QA LU 24H.

Patek Philippe

Annual Calendar 5396 White Gold / Blue Gradient

5396G-017 · 38.5 mm

Patek Philippe

Annual Calendar 5205 Rose Gold / Green

5205R-011 · 40.2 mm