Taking the stainless steel luxury sports watch niche to the next level, Patek Philippe has outdone themselves with Nautilus ref. 5980. Taking the Nautilus' design DNA and bringing it into the realm of chronographs, the ref. 5980 was launched in 2006 and fitted with Patek Philippe’s first inhouse chronograph movement, the automatic cal. CH 28-520. Building upon the Nautilus’ long-established sports watch credentials and the revered position the chronograph has within the sports watch category, the ref. 5980 is still water-resistant to 120m and comes sporting its signature mono-counter chronograph subdial at 6 o'clock which notifies onlookers that this is not just any Patek Philippe Nautilus, but rather one of the most complicated, and important, with regards to its significance for Patek Philippe thanks to the incredible movement found within.