Faithful to the unique legacy of L. Breguet, known for his skill in time measurement and acclaimed by King Louis XVIII as a reference watchmaker who excelled in the calculation of longitudes at sea, this well-known and prestigious watchmaking house has launched the modelBreguet Marine Équation Marchante 5887, with a Grand Complication that marks the beginning of a new era in the contemporary Marine line: the equation of time.
The equation of time is one of the most unusual and fascinating horological complications. Allows you to indicate the difference between mean solar time (civil hours and minutes) and true solar time (solar hours and minutes).
Since ancient times, the sun has been the basis for measuring time. However, the apparent movement of the sun (the true solar time that was measured with sundials) is not regular. With the improvement of horological precision, clocks became the basis of time and true solar time was replaced by mean solar time, in which all days have the same length of 24 hours. But this mean solar time can vary from true solar time, ranging from less than 16 minutes to more than 14 minutes.
There are only four days a year when both times are equivalent. The different positions of the sun in the sky are reproduced identically on the same dates, and watchmakers can "program" them with the help of a special figure-8 cam, which allows the curve that the sun traces in the sky to be mechanically reproduced. The cam is coupled to a sensor that moves an equation lever and allows the difference between civil time and solar time to be signaled. This indication is usually provided in a supplementary section or sphere. Thus, to know the true solar time, it is up to the user to do the calculation mentally, either adding or subtracting the indicated difference from the mean time.
The newBreguet Marine Équation Marchante 5887improves this reading as it simultaneously indicates the civil time and the true time with the help of two different minute hands. The active solar hand, decorated with a faceted golden sun, displays the direct reading of the minutes of solar time: a convenient and time-saving mechanism. This "simple" indication requires complex elaboration that very few watchmakers are capable of undertaking.
To this Great Complication another is added: a Perpetual Calendar, with two windows, one located between 10 a.m. and 11 a.m. and the other between 1 a.m. and 2 a.m., which respectively show the days of the week, as well as the months and the leap year. The calendar is located inside the hour disc and can be read with the help of a retrograde hand with an anchor that runs in an arc from 9 o'clock to 3 o'clock. A simple and intuitive distribution of the set of readings on the dial that has taken care of the aesthetics down to the last detail.
In addition to sporting an automatic caliber 581DR, the newBreguet's Marine Équation Marchante alberga una tercera complicación: un tourbillon de 60 segundos cuya caja de titanio contiene un volante Breguet con espiral de silicio que alcanza una frecuencia de 4 Hz manteniendo un óptimo nivel de reserva de marcha. Visible mediante una ventanilla situada entre las 7 h y las 9 h, dispone de una autonomía de 80 horas.
It presents aesthetic details such as a dial with two types of guilloché decoration: a wave motif and a “Marine royale” engraved on the tourbillon bar. On the back of the watch you can see the bridges thanks to their sapphire caseback, chiseled to represent the "Royal Louis", the first-rank ship of the French Royal Navy, down to the smallest detail. It also has a kite decorated with a compass rose, in allusion to astronomical navigation.
Thus, all these features make theBreguet Marine Équation Marchante 5887a modern and updated model that combines polished and satin surfaces in a 43.9 mm case available in rose gold or platinum. A precise machine with a careful packaging at the level of the excellence that the House of Breguet has always boasted. An essential.
Características del reloj Breguet Marine Équation Marchante 5887
Caja950 platinum with grooved edge. Sapphire caseback. Diameter 43.9 mm. Watertight up to 10 bar (100 m).
Spheregold blue, with hand-made guilloché decoration. Individually numbered and signed Breguet. Hour disc with Roman numerals and luminescent indexes. Breguet pomme hands in faceted 18k gold, with luminescent material. Solar minute hands with faceted golden sun. Daily window between 10 a.m. and 11 a.m. Month and year window between 1 o'clock and 2 o'clock. Retrograde calendar following an arc from 9 a.m. to 3 a.m. Power reserve indication in a window between 7 o'clock and 9 o'clock.
Motionself-winding mechanical with marching equation of time, perpetual calendar, tourbillon and 80-hour power reserve, cal. 581DPE. Numbered and signed Breguet. Small seconds and equation cam on the tourbillon axis. 16¾ lines. 57 rubies. Silicon escape wheel and inverted side anchor with silicon handles. Silicon spiral. Frequency 4 Hz. Adjusted in 6 positions.
BeltAlligator leather with gold folding buckle.
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