Bulgari Octo Finissimo Ultra Tourbillon Watch
Introduced in 2022, the original Bulgari Octo Finissimo Ultra was the thinnest watch in the world at the time, measuring just 1.80 mm thick. So it's only fitting that the Octo Finissimo Ultra Tourbillon is the world's thinnest tourbillon at 1.85 mm. Both the flying tourbillon cage and the dial are skeletonized, as are other bits of the manually wound BVL 900 movement. Made from titanium, it sits on a matching — and similarly thin — integrated bracelet, and is limited to just 20 examples worldwide.