Patek Philippe Nautilus Chronograph (ref. 5980/1A), featuring a mechanical automatic movement; white dial; chronograph complication with 60-minute and 12-hour counters together in a single elegant monocounter at 6 o'clock; date display at 3 o'clock; center sweep seconds hand, which also serves as the chronograph hand; and 40.5mm, stainless steel case with an integrated stainless steel, Nautilus-style bracelet.