Portugieser Perpetual Calendar 44 Armor Gold / Silver

In Context

At 44.4 mm it is a large watch — well above this catalogue’s 40 mm median, and enough to dominate a narrow wrist. At 14.9 mm it is a tall case, and it will catch on a cuff. 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. 50 m covers rain and hand-washing comfortably; it is not a watch to swim in.

The movement winds itself from the motion of your wrist. 168 hours of reserve puts it well past a weekend — several days off the wrist and it is still going. At 28,800 vph the seconds hand advances 8 times a second.

IW5037-01 is one of 4 executions of the IW5037 base reference. Underneath they are the same watch; what separates this one is a silver matte dial and a armor gold case. Beyond the time it carries a perpetual calendar.

Small hacking seconds Pellaton automatic winding Power reserve display Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase 7 days power reserve Rotor in 18-carat 5N gold

4 other watches in the library run the IWC 52616.

IWC

Portugieser Perpetual Calendar 44 Armor Gold / Black

IW5037-02 · 44.4 mm

IWC

Portugieser Perpetual Calendar 44 White Gold / Ice Blue

IW5037-03 · 44.4 mm

IWC

Portugieser Perpetual Calendar 44 White Gold / Dune

IW5037-04 · 44.4 mm

IWC

Big Pilot's Watch Perpetual Calendar Top Gun Woodland

IW5031-01 · 46.5 mm