Rotonde de Cartier Répétition Minute Double Tourbillon Mystérieux watch. 45mm rose gold case and crown with blue cabochon sapphire. Rose gold sword-shaped hands. Dark gray semi-matte alligator strap (additional black option available) with rose gold deployant buckle. Minute repeater and double mysterious tourbillon complications. Limited edition of 20 pieces. 9507 MC manual winding mechanical movement. 448 parts including 45 jewels. Total movement diameter: 39.30mm, movement thickness: 6.05mm, balance frequency: 21,600 vibrations/hour, power reserve of approximately 84 hours. Sapphire crystal and caseback. Case thickness: 11.15mm. Water resistant up to 3 bars (~30 meters).