New to the world of complicated watches, Bianchet is a creative contemporary Swiss watch brand founded on the modern reinterpretation of the Golden Ratio - 1.618 - in the world of fine watchmaking. The Tourbillon B1.618 Openwork’s tonneau case measures 43 mm in width, 50 mm in height (length) and 13 mm in thickness. From the side, the top and bottom of the watch follow a curve. The superposition of these two lines, the colored seam, the thickness of the bezel, the play on heights – they are guided by the Fibonacci sequence. An organic arc that affords maximum wear comfort, perfectly espousing the wrist. The case is available in titanium with multiple variations of hand finishing, each quite distinctive, even on the smallest surface areas. Nothing has been left out. Polishing, satin-finishing, and microblasting succeed each other from layer to layer, emphasizing the curves and their dramatic arc, marking the sharp edges of the bezel, all highlighted in bright red.