F.P. Journe 1408

The F.P. Journe Caliber 1408 powers the Répétition Souveraine, one of the world's thinnest minute repeater movements at just 4.5mm. Protected by multiple patents, this caliber reinvents the minute repeater mechanism to produce strong, crystal-clear tones from an impossibly slim profile. Two key innovations enable this: (1) Patented flat gongs mounted under the dial instead of around the movement, producing louder and clearer sound while saving space - first seen on F.P. Journe's Sonnerie Souveraine; (2) An innovative striking rack and strike selection system that occupies much less space than conventional mechanisms. The hours and minutes uniquely share the same hammer and gong tone, with automatic pauses inserted between chimes when there are no quarters. An inertia regulator controls chime speed, eliminating background noise of traditional air regulators. Twin mainspring barrels in parallel deliver stable power for the 56-hour reserve. The F.P. Journe free-sprung balance with variable inertia on four weights is adjusted in six positions. Movement manufactured in 18K rose gold, housed exclusively in stainless steel cases for optimal acoustic resonance.