The IWC Portuguese Perpetual Calendar 5021-11 is encased in platinum surrounding a silver dial on a brand new black alligator strap with a platinum deployant buckle. Functions include hours, minutes, small-seconds, day, date, month, year, perpetual calendar and moon phase. The watch measures 44.2mm in diameter, 15.4mm in thickness, and 52.4mm from lug-to-lug.
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