A diamond setting that is unique in its kind, like the “Clous de Paris”, inspired by the legendary guilloché gold Breguet dials. The diamond, whose hardness and purity are perfect for transmitting the sound vibrations to the outside of the case, makes it possible to further improve the tone of the piece, while limiting to a maximum the loss of vibrations. Like the major companies in the world of acoustics, who use diamonds as conductors in speakers, Breguet has chosen to offer an entirely diamond-set piece, where the beauty of the diamond setting is equalled only be the sound of the minute repeater.