Romain Gauthier’s first in-house movements, Calibre HM 2206 and Calibre HMS 2206, are sister calibres, with the latter featuring a seconds function to complement the existing hours and minutes of the former.
These superlatively engineered time-only calibres respectively power the timepieces Prestige HM and Prestige HMS.
With their innovative winding mechanism – a ‘flat’ caseback crown – supreme hand-finishing and off-centre indications, these movements firmly established the tone for future Romain Gauthier creations
Prestige HM & HMS calibres
Prestige HM & HMS calibres
Large-diameter ‘flat’ crown on the caseback
The ‘flat’ crown on the caseback increases winding efficiency because, unlike a traditional caseband crown, energy need not be transmitted through 90°.
The large diameter and undulating profile of the crown enable effortless winding, even while on the wrist. The crown is pulled out for time-setting.
Bespoke balance wheel and triangular pallet lever
The regulator features the Romain Gauthier balance wheel with curved arms and calibrated eccentric weights, plus hand-assembled pallet lever that is triangular for maximum rigidity.
Gears with circular spokes and high-efficiency teeth
The distinctive gears feature circular spokes providing elegance and strength, while the patented, high-efficiency profiles of the gear teeth are designed for optimal contact.
Visible seconds gear of Calibre HMS 2206
For Calibre HMS 2206, which powers Prestige HMS, Romain Gauthier has accommodated a seconds gear at 5 o’clock.
While the rotation of the gear, visible through the partly open dial, provides animation, its position makes for an easy reading of time: Once the wearer reads the hour-minute subdial, their eye is then naturally drawn to the sectorial seconds.
S-slot screw heads
The signature screw heads bear an S-slot that not only is aesthetic, but also enables more torque to be applied during movement assembly.
Superlative hand-finishing
The spectacular movement decoration, which varies slightly from edition to edition, includes hand-created and hand-polished rounded bevels, hand-frosting, snailing, spotting, straight-graining, circular-graining and Geneva waves, as well as hand-created and hand-polished jewel countersinks.
Learn about our other calibres
