Oris Big Crown ProPilot X Calibre 400

About This Watch

The Oris Big Crown ProPilot X Calibre 400 is the most technically advanced and aesthetically daring watch in the Big Crown collection, combining the flagship Calibre 400 in-house movement with a skeletonized dial and lightweight titanium construction. The "X" designation signals a departure from the classical ProPilot formula — where the standard model prioritizes legibility through simplicity, the ProPilot X celebrates mechanical artistry through openworked dial architecture that reveals the Calibre 400's bridges, mainspring barrel, and oscillating weight. The titanium case at 39mm creates a watch that feels almost weightless on the wrist at just 95 grams, making it one of the most comfortable pilot watches in production. The Calibre 400's 120-hour power reserve means five full days of autonomy, and the 10-year warranty provides extraordinary long-term security for what is a relatively accessible in-house movement. The skeletonized dial is executed with impressive depth and detail — the various movement components are finished at different levels, creating a three-dimensional landscape that rewards extended observation. Applied luminous hour markers at the key positions maintain respectable legibility despite the open-worked nature of the dial, a thoughtful concession to the ProPilot's instrument-watch heritage. The titanium bracelet features a micro-adjust extension system for on-the-fly sizing, and the overall fit and finish rival titanium watches from brands at significantly higher price points. At $3,800, the ProPilot X represents serious watchmaking — in-house movement, titanium construction, skeletonized dial — at a price that most luxury brands would charge for a basic three-hand steel watch.