Exclusive new product IWC - IWC Portuguese series, model: IW344202. Schaffhausen - Swiss watchmaker IWC Schaffhausen has added a new diameter of 42m to its IWC Portuguese series perpetual calendar watch at 3 o'clock, 6 o'clock and 9 o'clock. It has a small dial that displays the date, month and day of the week. The accurate perpetual calendar moon phase display is integrated into the month display panel, and the built-in fully automatic mechanical movement is constantly exquisite.