Rotonde de Cartier Double Tourbillon Mystery watch, 45 mm, Manufacture mechanical movement with manual winding 9454 MC certified "Poinçon de Genève". Case in 950‰ platinum, beaded crown set with a sapphire cabochon, slate-coloured galvanised guilloché dial, silvered open-work satin-brushed grid with sunray effect and black transferred Roman numerals, sword-shaped hands in blued steel. Strap in black alligator skin with double adjustable folding buckle in 18K white gold. Double tourbillon mystery 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 collection showcases the most advanced movements in Cartier Fine Watchmaking: the Astrorégulateur, minute repeater, Astrotourbillon and skeleton grande complication.