IWC’s perpetual calendar, developed by Kurt Klaus in the 1980s, automatically recognizes the different lengths of the months and the leap years. It can be easily adjusted using the crown. The mechanical program will not require any manual correction until 2100.
18 ct Armor Gold® case Diameter 44.2 mm Height 14.9 mm See-through sapphire glass back 52610 Calibre IWC-manufactured movement Automatic, self-winding 168 hours Power Reserve
