Ocean-inspired design
The Marine Tourbillon Équation Marchante 5887 combines the bold, sporty design that has always characterized the Marine collection with a highly complicated movement and exquisite hand-engraved decoration. Breguet has now unveiled a rose gold model with a slate gray dial.
The Marine collection's connection to the ocean is emphasized by the guilloched wave pattern in the center of the dial, while the applied Roman numerals and Breguet hands with moon motifs at the tips are crafted from 18K rose gold. Automatic winding. 57 jewels. 28,800 vph. 18KRG (diameter 43.9 mm, thickness 11.75 mm). Power reserve approximately 80 hours. Water resistant to 10 bar. 23,280,000 yen (excluding tax).
The majestic figure of the former French Navy flagship "Royal Louis"
The case back features an image of the former French naval flagship, the Royal Louis, engraved across the movement's bridges. The ship's entire form spans four bridges, with delicate details unfolding from bridge to bridge. Positioning the elements of the image so that they align perfectly when the movement is assembled requires exceptional precision. A compass rose motif is also hand-engraved on the barrel cover. The platinum peripheral rotor, also guilloched and engraved in Breguet's traditional style, offers an unobstructed view of the movement's artwork thanks to its shape.
A fusion of complex mechanisms: the Perpetual Calendar Equation of Time Tourbillon
The Marine 5887 also features a new-generation tourbillon, a perpetual calendar, and an equation of time display. Breguet has built these historic complications into the Marine 5887, creating a watch that recalls the appointment of founder Abraham-Louis Breguet as Master Watchmaker to the Royal Navy, or official watchmaker to the French Navy, by King Louis XVIII of France in 1815.
Running Equation of Time
At the heart of the movement is a sapphire crystal disc that rotates once a year, faithfully reproducing the Equation of Time. The transparent disc, marked with a 12-month scale around its periphery, also reveals the tourbillon mechanism beneath. The running equation of time is driven by a set of gears known as a "differential." This ingenious differential mechanism combines two independent inputs into a single output. The mean solar time minute hand is displayed by the watch's main gear train. Meanwhile, a finger tracing the shape of a cam on the disc reads the equation of time. The differential then performs the calculation to calculate true solar time (mean solar time + equation of time), which is then displayed by the true solar time minute hand. These two minute hands allow the watch's owner to read mean solar time and true solar time at a glance.
perpetual calendar
Ultra-thin tourbillon movement
The movement powering this Grande Complication is derived from the ultra-thin automatic tourbillon caliber 581. The tourbillon's basic design concept remains unchanged, rooted in a system patented by Abraham-Louis Breguet. The complete balance, hairspring, and escapement that controls the watch's rate remains housed in a cage that rotates once per minute to compensate for gravity-induced errors. At the same time, the tourbillon's design incorporates modern technologies, including a titanium carriage, balance, and silicon escapement. The tourbillon mechanism itself has also been redesigned, with the carriage now driven by a peripheral gear. This creates the illusion that the tourbillon and its components are floating in mid-air. The quest to make the mainspring thinner has also been pursued. Breguet's designers created a new groove around the barrel, which is then supported externally by three bearing assemblies, reducing its thickness by 25%. The power reserve indicator is now a gauge-type display at 8 o'clock, in order to balance it with the other displays on the dial.
