IWC Schaffhausen Portugieser Perpetual Calendar Tourbillon

The IWC Schaffhausen Portugieser Perpetual Calendar Tourbillon IW504504 has an 18 ct Armor Gold case measuring 45 mm across. The case stands 15.2 mm thick, with a self-winding IWC manufacture calibre 51950 inside offering a power reserve of 168 hours. A sapphire crystal with an arched edge and antireflective coating on both sides covers the blue dial, and the case has a display back. The watch combines a perpetual calendar, showing date, day, month and year, with a moon phase display and a flying tourbillon, alongside a power reserve indicator. The case carries a rating of 30 metres. IWC specifies a blue alligator leather strap.