Iwc Portuguese Perpetual Calendar Watch IW503203 Made in USA or Imported 18kt white gold case with a black leather strap. Fixed bezel. Blue dial with silver-toned hands and Arabic hour markers. Minute markers around the outer rim. Dial Type: Analog. Four -month, combined day of the week and small seconds, combined date and power reserve and moonphase. Automatic movement. Scratch resistant sapphire crystal. Case diameter: 44.2 mm. Round case shape. 18kt white gold tang clasp. Water resistant at 30 meters / 100 feet. Functions: hour, minute, second, perpetual calendar. Luxury watch style. Watch label: Swiss Made. IWC Portuguese Perpetual Calendar Blue Dial 18kt White Gold Black Leather Men's Watch IW503203.