Big Crown ProPilot X Calibre 115

The Architect

ExpertSep 27, 2026

71

The Oris Big Crown ProPilot X Calibre 115 represents a deliberate architectural departure from the ProPilot lineage — a lineage historically concerned with legibility and pilot-instrument pragmatism — toward something more structurally expressive. The skeletonized dial, visible gear train, and the dominant ten-day power reserve arc constitute a visual grammar that is, vis-à-vis its ProPilot predecessors, considerably more theatrical. The execution is considered without being exceptional; the layered construction reads with coherence under direct observation, though it lacks the refinement that would elevate it to genuine distinction. Concordantly, Cal. 115 — a manual-wound movement of in-house provenance, a meaningful credential at this price point — is compromised in its practical application by a ten-hour power reserve that borders on the structurally irrational. A ten-day display mechanism paired with a ten-hour reserve produces a functional dissonance that no amount of design intent fully resolves. The case, at 44 millimeters and 15.7 millimeters of thickness, presents wearability constraints that are not theoretical but arithmetical. Ergo, the value equation carries weight only for the collector who prioritizes horological self-expression over discipline. At $4,850, the probability that a more resolved alternative exists within the same category approaches near-certainty.