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.

The moon phase display on the Portugieser Perpetual Calendar diverges by just 1 day in 577.5 years from the actual phase of the moon. The elegant timepiece leaves virtually no wish unfulfilled. It is equipped with features such as a perpetual calendar, a window showing the year in four digits and a 7-day automatic movement with Pellaton winding. The four sub-dials on the silver-plated dial display the phase of the moon, the date, month and day, the power reserve and the small seconds. This timepiece is powered by an IWC-manufactured movement from the 52000-calibre family, featuring a solid red gold rotor and blued screws. The 18-carat red gold watch has an arched-edge front glass and comes with a dark brown alligator leather strap.

– Solid 18kt rose gold case with polished finished bezel & lugs, and fine brushed finished edges.

Dial:
– Silver main dial.
– Matching silver sub-dials with a very fine concentric circle engraved pattern.
– Applied rose gold toned Arabic Numeral & Index hour markers.
– Fine printed minute track.
– Elegant leaf shaped polished rose gold hour & minute hands.

Perpetual Calendar with year display:
– Day of the week indicated on the outside perimeter of the sub-dial at the 9 o’clock position.
– Date indicated on the outside perimeter of the sub-dial at the 3 o’clock position.
– Month indicated at the sub-dial at the 6 o’clock position.
– Current year displayed in a full 4 digit format with a window between the 7 & 8 o’clock position.

Moonphase:
– Displayed at sub-dial at the 12 o’clock position. Indicated by a rose gold colored full moon display on a rotating deep blue disc with small
gold stars.

Power Reserve Indicator:
– This watch features an impressive 7-Day Power Reserve, indicated by a hand at the center of date sub-dial at the 3 o’clock position.

– Small running seconds hand indicated by a hand at the center of day sub-dial at the 9 o’clock position.
– IWC Caliber 52610, beats at 28,800 vph, contains 54 Jewels & has an impressive power reserve of 7 Days (168 hours) hours.