A remarkable demonstration of the notion of interchangeability for a watch: on the wrist, it imposes by its harmonious proportions and perfect roundness and, at the end of a chain, it recalls the elegance of a pocket watch of yesteryear. On the dial, the odd hours are soberly displayed around the centred logo, which gives it its "vintage" side, with the crown at 2 o'clock. Whether a sports or city accessory, this BB-01 is transformed by its Nato strap in fabric, steel (Milanese mesh) or leather.