The IWC Portugieser Perpetual Calendar 42 (IW344207) combines technical sophistication with timeless elegance. This 42.4mm stainless steel watch features a green dial with a perpetual calendar that automatically adjusts for month lengths and leap years. The automatic IWC caliber 82650 offers a 60-hour power reserve. A green alligator leather strap and transparent case back complete the design.

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