This all-new caliber is housed in a 46.30-mm diameter Fleurier Amadéo® convertible case. A true icon of the Maison, the Amadéo® system transforms the timepiece into a reversible wristwatch, a pocket watch, or a table clock without the use of any tools. Additionally, the Virtuoso IX case is equipped with a secret opening mechanism. The case back can be opened by simply applying pressure to the crown. The proven ergonomics of the Fleurier case make this timepiece one that is suited for everyday wear.