Rotonde de Cartier annual calendar watch, 45 mm, Manufacture mechanical movement with automatic winding, 9908 MC. 18K white gold case, beaded crown set with a sapphire cabochon, slate-colored galvanized guilloché lower dial, silvered days and months zone with sunray effect, silvered openwork grid with sunray effect, black transferred Roman numerals and slate-colored galvanized guilloché center, blued-steel sword-shaped hands, hammer-shaped hands with red tips. Black alligator-skin strap with double adjustable 18K white gold folding buckle. Annual calendar complication with days and month indicated by two hammer-shaped hands, large date at 12 o'clock. Individually numbered movement comprised of 239 parts including 32 jewels. Movement diameter: 30 mm, movement thickness: 5.9 mm, balance: 28,800 vibrations/hour, power reserve approx. 48 hours. Sapphire case back. Case thickness: 14.05 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.