IWC Portugieser Perpetual Calendar


A moon you can rely on, even under cloudy skies: the perpetual calendar’s high-precision moon phase display needs a one-day adjustment every 577.5 years.


18K red gold case

Diameter 44.2 mm

Height 14.9 mm

See-through sapphire glass back

Water resistance 3 bar


52610 Calibre

Automatic, self-winding

Frequency 28800.0 vph (4.0 hz)

54 Jewels

168 hours Power Reserve

IWC-manufactured movement

Côtes de Genève, perlage


Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase

7 days power reserve

Power reserve display

Sapphire glass, arched-edge, antireflective coating on both sides

Pellaton automatic winding

Small hacking seconds


Silver-plated dial


Dark brown alligator leather strap by Santoni

Strap width 22 MM

SKU: MENTI38075 Categories: , , Tags: ,
Additional Information
Weight 5 lbs
Jewelry or Watch Type

Men's Watches