The most impressive Cartier grand complication we've ever seen, this Tortue retrograde perpetual calendar has been expertly skeletonised by the top artisans in the Cartier workshops. Classic Geneva stripes and brilliant red jewels wink through the resolutely modern anthracite grey, brushed dial. The large, 18ct white gold case curves gently over the wrist and houses the automatic Cartier 9422 MC calibre perpetual calendar movement.