Rotonde de Cartier Astrorégulateur watch
50 mm, automatic, niobium-titanium, leather
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.
ROTONDE DE CARTIER ASTROREGULATEUR
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).
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