Rotonde de Cartier Perpetual Calendar Chronograph watch, 42 mm, Manufacture mechanical movement with automatic winding 9423 MC. 18K white gold case, beaded crown set with a sapphire cabochon, white galvanized guilloché dial, silvered openwork satin-brushed grid with sunray effect and black transferred Roman and Arabic numerals, months and days of the week, blued-steel sword-shaped and hammer-shaped hands. Black alligator-skin strap with double adjustable 18K white gold folding buckle. Perpetual calendar complication with days indicated by a retrograde hand, month and leap year indicated in a counter at 12 o'clock. Individually numbered movement comprised of 445 parts including 44 jewels. Movement diameter: 32 mm, movement thickness: 7.70 mm, balance: 28,800 vibrations/hour, power reserve approx. 48 hours. Sapphire case back. Case thickness: 14.9 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.