IWC Schaffhausen Portugieser Perpetual Calendar Tourbillon

The IWC Schaffhausen Portugieser Perpetual Calendar Tourbillon IW504506 has a platinum case measuring 45 mm across. The case stands 15.2 mm thick and carries a 30 metre water resistance rating. An automatic, self-winding IWC-manufactured calibre 51950 drives the watch, with a power reserve of 168 hours. The dial sits under an arched-edge sapphire crystal with antireflective coating on both sides, and the caseback is a display back showing the movement. This perpetual calendar shows date, month, weekday and year, and it combines a moon phase display with a flying tourbillon. A power reserve indicator is also present on the dial. IWC specifies a blue alligator leather strap.