IWC Schaffhausen Portugieser Chronograph

The IWC Schaffhausen Portugieser Chronograph IW371611 is a chronograph with a 41 mm case in 18 ct 5N gold. The case measures 13 mm thick and carries a rating of 3 bar, or 30 metres. A convex sapphire crystal with antireflective coating on both sides covers the silver plated dial, and the case has a display back finished with a synthetic sapphire crystal. Inside is the self-winding calibre 69355, giving a power reserve of 46 hours. The watch combines chronograph seconds and minutes with a small seconds function. A dark brown alligator leather strap by Santoni, fitted to 20 mm lugs accompanies this reference. The movement runs at 28,800 vibrations per hour with 27 jewels.