IWC Schaffhausen Portugieser Annual Calendar

The IWC Portugieser Annual Calendar, reference IW503504, has a 44.2 mm case in 18-carat 5N gold. The watch has an annual calendar; the case has a thickness of 14.9 mm. Self-winding calibre 52850 has a 168-hour power reserve, 36 jewels and 326 components. The silver dial has a day and date display, small hacking seconds and a power reserve indicator beneath arched-edge sapphire glass with antireflective coating on both sides. A black alligator leather strap is on the watch. A water-resistance rating of 30 metres applies to the case. A see-through case back gives a view of the movement.