IWC Portugieser Annual Calendar IW503502.
Stainless steel case with a black alligator leather strap. Fixed bezel. Midnight blue dial with silver-toned hands and Arabic numeral hour markers. Minute markers around the outer rim. Dial Type: Analog. Annual calendar. Two – 60 second and power reserve. IWC Calibre 52850 automatic movement with about 168 hours of power reserve. Scratch resistant sapphire crystal. Case size: 44.2 mm. Case thickness: 15.3 mm. Round case shape. Water resistant at 30 meters / 100 feet. Functions: annual calendar, month, date, day, hour, minute, small second, power reserve indicator.