Rotonde de Cartier Mysterious Double Tourbillon watch, 45 mm, Manufacture mechanical movement with manual winding 9454 MC certified "Poinçon de Genève". 950‰ platinum case, beaded crown set with a sapphire cabochon, slate-colored galvanized guilloché dial, silvered openwork satin-brushed grid with sunray effect and black transferred Roman numerals, blued-steel sword-shaped hands. Black alligator-skin strap with double adjustable 18K white gold folding buckle. Mysterious double tourbillon complication. Individually numbered movement comprised of 242 parts including 25 jewels. Movement diameter: 35.5 mm, movement thickness: 5 mm, balance: 21,600 vibrations/hour, power reserve approx. 52 hours. Sapphire case back. Case thickness: 12.45 mm. Water-resistant to 3 bar (30 meters/100 feet).
The Rotonde de Cartier watch showcases the most sophisticated movements in Fine Watchmaking: a central chronograph, flying tourbillon, and astrorégulateur.