ProPilot X Calibre 400

The Oris ProPilot X Calibre 400 pairs a slender 39 mm titanium case with the brand's own Calibre 400, a movement that marked a significant milestone in Oris's long history of producing accessible mechanical watches. A blue dial with applied markers gives the reference a clean, legible character well suited to its pilot-watch heritage. Introduced in 2022, the ProPilot X Calibre 400 sits at the intersection of modern manufacture watchmaking and the pared-back aesthetic of the ProPilot X line.

The ProPilot X collection emerged as Oris's most technically ambitious pilot-watch family, distinguished by its skeletonised and minimalist design language. The Calibre 400 — featuring a five-day power reserve, anti-magnetic construction, and a ten-year service interval — debuted in the broader Oris catalogue before being integrated into the ProPilot X line. The combination of an in-house movement with a titanium case in the 39 mm format reflected a deliberate move toward lighter, more wearable pilot watches without sacrificing mechanical substance. Among collectors, the reference is noted as an accessible entry point into genuine manufacture territory for the brand.