The Rotonde de Cartier Astrotourbillon introduced in 2010 is a remarkable timepiece that showcases both ingenuity and elegance. Encased in 18K white gold, it deviates from the traditional tourbillon design where the mechanism rotates around its own axis.

Instead, the Astrotourbillon offers a unique viewing experience by employing a special rotational axis positioned at the center of the movement. To achieve balance, a platinum counterweight is concealed beneath the small center dial, and the escapement undergoes a 360-degree rotation, effectively countering the force of gravity. The arrow-pointer bridge right above the balance wheel intelligently indicates the seconds.

Enhancing its appeal, the dial of the Astrotourbillon features a concentric design that adds depth and visual allure. From the outer seconds track to the sunken inner ring with large Roman numerals, and finally the prominent display of the rosette guilloché pattern, the timepiece is undoubtedly a special release from Cartier.