B1.618 Openwork Tourbillon 43mm Diver while alpha-shaped hands sweep across

while alpha-shaped hands sweep across its surface with effortless grace

giving the piece unique sophistication

As was the case with the Ref

Its limited production

is characterized by its semi-circular

B1.618 Openwork Tourbillon 43mm Diver while alpha-shaped hands sweep acrossRevealing 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,