The IWC Portugieser Annual Calendar shows the moth, date and day in three separate windows, The date advance system takes into account the different lengths of the months and only February and leap years need to be manually corrected A stylish Swiss-made IWC timepiece, this Portugieser has a striking midnight blue dial with silver-tone Arabic numeral, housed in a stainless steel case. The curved strap horns offer greater comfort even on a slimmer wrist. On the reverse, the see-transparent sapphire-glass back provides an unimpeded view of the exquisite new IWC-manufactured 52850 calibre. Completed with a black leather strap. Buy now and receive a FREE WOLF Watch Winder worth £239. The Watch Winder will be added to your order at dispatch. Limited stock available. Web exclusive offer.