Rotonde de Cartier Astrotourbillon watch, 47 mm, Manufacture mechanical movement with manual winding 9451 MC. 18K white gold case, beaded crown set with a sapphire cabochon, silver-toned lower dial with guilloché except for the hour circle with satin-brushed sunray effect and black transferred Roman numerals, silver-toned guilloché upper dial, silver-toned and slate-colored bi-color satin-finish flange, blued-steel sword-shaped hands. Black alligator-skin strap with double adjustable 18K white gold folding buckle. Astrotourbillon complication with carriage rotating around the dial in 1 minute. Individually numbered movement comprised of 187 parts including 23 jewels. Movement diameter: 40.1 mm, movement thickness: 9.01 mm, balance: 21,600 vibrations/hour, power reserve approx. 52 hours. Sapphire case back. Case thickness: 15.5 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.