The Cartier Rotonde de Cartier Astrocalendaire Perpetual Calendar (Ref. WHRO0027) is a luxurious timepiece that seamlessly combines traditional watchmaking with innovative design. Encased in 18K rose gold, this 45mm watch features a unique dial layout with a flying tourbillon at the center and a perpetual calendar display arranged in three intertwined discs, offering a fresh perspective on this classic complication. Powered by the self-winding Caliber 9459 MC movement, it boasts a 50-hour power reserve and is secured with an anthracite-tone alligator strap.