B1.618 Openwork Tourbillon 43mm Diver produced in the late 1990s

produced in the late 1990s and early 2000s

As was the case with the Ref

builds on this heritage with updated mechanics

giving the piece unique sophistication

The distinctive design elements—such as the prominent bezel and ergonomic strap—ensure both comfort and presence on the wrist

B1.618 Openwork Tourbillon 43mm Diver produced in the late 1990sRevealing the intricacies of the calendar function, the fully skeletonized Big Date complication of the Flying Tourbillon Grande Date B 1. 618 movement displays the date in a format that is both easy to read and aesthetically minimalist. A simple colour accent on the aperture identifies the current date, without detracting from the mechanical subtlety of the two discs that rotate in time with the days. Bianchet adapted the big date complication,