Powering this Nautilus is the mechanical self-winding Caliber CH 28-520 C, delivering both timekeeping precision and chronograph functionality alongside a date display. The movement is visible through a transparent case back, offering a window into its mechanical workings.
The 40.5mm stainless steel case features a screw-down crown and water resistance to 120 metres (396 feet). The blue gradient dial is appointed with gold applied hour markers finished with a luminescent coating, striking a balance between legibility and refined aesthetics.
A stainless steel bracelet with Nautilus fold-over clasp completes the watch, maintaining the cohesive design language that has defined this reference. Reference 5980/1A-001 represents the chronograph expression of the Nautilus line in its classic steel and blue configuration.
