IWC Portugieser Perpetual Calendar 42 IW344202. 42.4 mm rose gold case. Silver dial with date sub-dial at 3 o’clock, moon phase and month indicators at 6 o’clock, weekday and leap year indicators at 9 o’clock. Automatic Swiss made IWC caliber 82650, features 46 jewels, 326 parts. Power reserve of 60 hours. Brown alligator leather strap with tang buckle.