Calatrava Weekly Calendar Stainless Steel / Heldwein

In Context

At 40 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. At 10.79 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.

5212A-010 is one of 2 executions of the 5212A base reference. Underneath they are the same watch; what separates this one is a red dial and a stainless steel case. It was a limited edition.

Weekly calendar. Date. Sweep seconds hand. Diameter: 27 mm. Height: 4.82 mm. Parts: 304. Jewels: 50. Power reserve: min. 35 hours – max. 45 hours. Central rotor in 21K gold, unidirectional winding. Balance: Gyromax®. Semi-oscillation/hour: 28 800 (4 Hz). Balance spring: Spiromax®. Hallmark: Patek Philippe Seal.

1 other watch in the library runs the Patek Philippe 26-330 S C J SE.

Patek Philippe

Calatrava Weekly Calendar Stainless Steel / Silver

5212A-001 · 40 mm