Oh, I knew one more link thing: link I knew that before Richard Mille's RM UP-01 slinked onto the scene this July and became the world's thinnest watch, the Bulgari Octo Finissimo Ultra, at 1.80mm, held the record. The poor little guy only came out in March 2022; link so little time with its (thin) crown! Prior to that, the thinnest watch was the 2.0mm thick Piaget Altiplano Ultimate Concept, which came out in 2018.