IWC Schaffhausen Portugieser Grande Complication

The IWC Schaffhausen Portugieser Grande Complication IW377602 is a chronograph in 18 ct rose gold with a 45 mm case. The case measures 16.5 mm thick, with a lug width of 22 mm, and the case carries a 30 metre water resistance rating. Inside is the self-winding calibre 79091, offering a 44-hour power reserve. The dial sits under an arched-edge sapphire crystal with antireflective coating on both sides. Complications include a perpetual calendar with date, day, month and year displays, a perpetual moon phase, and a minute repeater sounding hours, quarters and minutes, alongside the chronograph function and small seconds. IWC specifies a dark brown alligator leather strap by Santoni.