IWC Schaffhausen Portugieser Perpetual Calendar Edition "Arije"

The IWC Portugieser Perpetual Calendar Edition "Arije", reference IW502309, has a 44.2 mm case in 18-carat 5N gold. This special edition has a perpetual calendar; the case measures 15.5 mm thick. The movement is self-winding and has a 168-hour power reserve, 62 jewels and 428 components. The brown dial has a day and date display, small hacking seconds, a power reserve indicator and a moon phase display under convex sapphire glass with antireflective coating on both sides. A dark brown alligator leather strap is on the watch. The case carries a water-resistance rating of 30 metres. Calibre 51613 operates at a frequency of 21,600 vibrations per hour.