Rotonde de Cartier Astroregulateur Watch W1556211
Controlling the effects of gravity has always been one of the greatest challenges facing watchmakers. Until now, the tourbillon has been the most common solution to this problem. With the Caliber 9800 MC, Cartier proposes an alternative to the tourbillon. This unprecedented movement is founded on one principal characteristic: its rotor, which bears the entire escapement, oscillator and small-seconds assembly, always returns to the same position, thus avoiding the effect of gravity on timekeeping in vertical positions. A real triumph of watchmaking design, this rotor, carrying five times as many parts as a simple tourbillon carriage, bears new witness to the skill of Cartier’s master watchmakers. Numbered edition limited to 50 timepieces.
Case in niobium-titanium, Astrorégulateur complication, circular-grained titanium crown set with a sapphire cabochon, sapphire crystal, slate-gray galvanic guilloché dial, sword-shaped blued-steel hands, black alligator-skin strap, double adjustable deployant buckle in 18K white gold, water-resistant to 3 bars (30 meters/100 feet). Manufacture mechanical movement with automatic winding caliber 9800 MC, hours, minutes with oscillating weight bearing the escapement, total diameter of the movement: 35.8 mm, thickness: 10.1 mm, 281 parts including 43 jewels, balance: 21,600 vibrations/hour, approx. 54 hours of power reserve, individually numbered movement. Case dimensions: 50 mm in diameter - 18 mm thickness.