IWC Schaffhausen Portugieser Annual Calendar

The IWC Portugieser Annual Calendar, reference IW503501, has a 44.2 mm steel case. The watch has an annual calendar; the watch's case has a thickness of 14.9 mm. Calibre 52850 is self-winding and has a 168-hour power reserve and 36 jewels. The silver dial has a day and date display, small hacking seconds and a power reserve indicator. A black alligator leather strap is on the watch. The case carries a water-resistance rating of 30 metres. A see-through case back displays the movement. The sapphire glass has arched edges and has antireflective coating on both sides.