IWC Schaffhausen Portugieser Perpetual Calendar

The IWC Portugieser Perpetual Calendar, reference IW503401, has a 44.2 mm case in white gold. The watch has a perpetual calendar; the case is 14.9 mm thick. Self-winding calibre 52615 has a 168-hour power reserve, 54 jewels and 381 components. The blue dial has a day and date display, small hacking seconds, a power reserve indicator and a moon phase display. A black alligator leather strap by Santoni is on the watch. The case's water-resistance rating is 30 metres. The dial is covered by arched-edge sapphire glass with antireflective coating on both sides.