The IWC Portugieser Perpetual Calendar 44 (IW503701) combines technical sophistication with timeless elegance. This 44.4mm watch, crafted from 18k Armor Gold®, features a silver-tone dial with a perpetual calendar that automatically adjusts for month lengths and leap years. The automatic IWC caliber 52616 provides a 7-day power reserve. A brown alligator leather strap and transparent case back complete the design.

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