Rotonde de Cartier watch

Rotonde de Cartier Astrocalendaire watch, flying tourbillon and perpetual calendar, 45 mm, Manufacture mechanical movement with automatic winding 9459 MC. Rose gold 750/1000 case, beaded rose gold 750/1000 crown set with a blue sapphire cabochon, white gold 750/1000 sunray guilloché dial, blued-steel sword-shaped hands. Grey alligator skin strap, double adjustable folding rose gold 750/1000 buckle. Circular-display perpetual calendar and flying tourbillon complications, watch and movement certified Poinçon de Genève. Individually numbered movement consisting of 382 parts including 51 jewels. Total diameter of movement: 32 mm, movement thickness: 8.1 mm, balance: 21,600 vibrations/hour, power reserve approx. 50 hours. Sapphire crystal and case back. Case thickness: 15.1 mm. Water-resistant to 3 bar (~30 metres).