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Portuguese Perpetual Calendar

IWC 2010

IWC: ortuguese Perpetual Calendar/2010

The Portuguese Perpetual Calendar : an autonomous perpetual calendar, complete year display, countdown function to the nextfull moon and a two-hemisphere moon phase display, which shows the age of the moon for the northern and southern hemispheres with record breaking accuracy - a deviation of only one day in 577 years.

It is now available in warm red gold in the existing case size of 44.2 millimetres, and in a white gold case with a midnight blue dial. The Portuguese Perpetual Calendar with the traditional display of the moonphase is now also being manufactured in the same case size, in red gold with a silver-plated dial and in white gold with a slate-coloured dial.