IWC Schaffhausen Portugieser Sidérale Scafusia

The IWC Schaffhausen Portugieser Sidérale Scafusia, reference IW504101, comes in a platinum case measuring 46 mm across. The case stands 17.6 mm thick, with a lug width of 22 mm, and the case carries a 30 metre water resistance rating. A manual-winding, IWC-manufactured calibre 94900 drives the watch, with a power reserve of 96 hours. The dial sits under a convex sapphire crystal with antireflective coating on both sides. A display back reveals the movement from behind. Complications include a perpetual calendar and a tourbillon, alongside a date display and power reserve indicator. The watch is fitted on a black alligator leather strap.