The Tourbillon Fleur has a manually wound manufacture caliber, simply known as RM19-02. Its functions are hours and minutes; it has a 36-hour power reserve. The time can be read on the small dial in the top right corner.

Beneath it, at 7 o’clock, lies an unusual flying tourbillon. The cage is 11.1 mm wide, with a balance wheel diameter of 10 mm. But the entirety of it sits between the five petals of a magnolia blossom. These hand-crafted petals, made of gold, will open every five minutes. When they do, the tourbillon rises 1 mm higher, pushing out to become more visible. It is meant to resemble the motion of a flower’s stamen; to that end, the center of the tourbillon is set with precious stones to look more like a bud. The petals’ movements and the rise of the tourbillon are powered by a second mainspring barrel and a separate gear train.

The wearer can open or close the magnolia manually, adjusting its cycle, via a pusher at 9 o’clock. The RM 19-02 Tourbillon Fleur is limited to a production of 30 pieces worldwide.