IWC · Automatic

75320

The Portofino Chronograph's automatic chronograph, built on a Sellita SW500 — the clone IWC turned to once ETA stopped supplying Valjoux 7750 ébauches outside the Swatch Group. It is the direct successor to the 79320, which used the 7750 itself, and the layout carries over unchanged: counters at six, nine and twelve with a day-date aperture at three. IWC regulates and finishes the base before fitting it.