Rotonde de Cartier Astrorégulateur watch, 50 mm, Manufacture mechanical movement with automatic winding 9800 MC. Niobium-titanium case, titanium beaded crown set with a sapphire cabochon, slate-colored galvanized guilloché dial, silvered openwork 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. Astrorégulateur complication with the escapement incorporated into the oscillating weight to avoid the effects of gravity in vertical positions. Individually numbered movement comprised of 281 parts including 43 jewels. Movement diameter: 35.8 mm, movement thickness: 10.10 mm, balance: 21,600 vibrations/hour, power reserve approx. 54 hours. Sapphire case back. Case thickness: 18 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.