IWC Schaffhausen Big Pilot's Watch Annual Calendar Edition "150 Years"

The IWC Big Pilot's Watch Annual Calendar Edition "150 Years", reference IW502708, has a 46.2 mm steel case. This special edition has an annual calendar; the case is 15.3 mm thick and has a screw-down crown. Self-winding calibre 52850 has a 168-hour power reserve and 36 jewels. The blue dial has a day and date display, small hacking seconds and a power reserve indicator under convex sapphire glass. The watch has a black alligator leather strap. The case carries a water-resistance rating of 60 metres. Côtes de Genève and perlage are among the movement's finishes.