The joy of mechanics comes to the fore in the new ProPilot X Calibre 400, a titanium-cased watch inspired by more than a century of aviation heritage. The new ProPilot X Calibre 400 is designed to inspire joy no matter what angle you come at it from. The dial-side is defined first by its 39mm titanium case. The taut, angular lines of the aviation-inspired form are satin and sand-blasted, giving the watch its raw, technical look, and complemented by the familiar ProPilot bezel and a muscular, sculpted titanium bracelet. The oversized crown is also titanium, and flanked by protectors. And then there’s the view from the other side. The watch’s titanium case back and open sapphire crystal frame Oris Calibre 400, the new in-house five-day automatic.