When the Marine 5887 Tourbillon Time Equation was first launched, Breguet intertwined the three main lines in its history. First of all, it is the invention of the tourbillon that the brand has passed down to the present. The founder Abraham-Louis Breguet obtained this patent in 1801. Equally important is the unparalleled historical wealth of the brand in the field of complication timepieces: the Marine 5887 watch, in addition to the latest generation of tourbillon, is also equipped with perpetual calendar and time equation functions. Third, by combining these two historic pillars in a Marine nautical series timepiece, the brand can’t help but recall that in 1815, King Louis XVIII of France awarded Mr. Breguet a “Royal French Navy” The title of “Master” made him the official watchmaker of the Royal French Navy.

In order to highlight the relationship between the Marine series and the ocean, the center of the dial is decorated with a guilloche pattern with wave patterns. The Roman numeral hour markers and Breguet hands are all made of rose gold. On the back of the movement, an ancient French naval first class battleship “Royal Louis” is depicted, hand-engraved on the movement plywood. The entire hull spans four bridge bridges, and the delicate details extend from one bridge to the other. This requires the position of the pattern to be extremely precise, so that each pattern element can be completely aligned after the movement is assembled. The compass pattern decorated on the barrel drum is also hand-engraved. The ring-shaped oscillating weight is made of platinum, and is decorated with the word Breguet through guilloché engraving and hand-engraving techniques, making this art-like movement fully presented in front of your eyes, without any obstruction of the horizon.
Marine nautical series 5887 tourbillon time equation replica watches is equipped with two minute hands, a traditional civilian hour and minute hand and a second minute hand that can directly indicate solar time. There is a cam at the core of the movement, which is placed on the sapphire crystal disc. It takes one year for each complete rotation to faithfully reproduce the trajectory of the time equation. A week along the transparent disc marks the month of the year, and the transparent design makes the tourbillon underneath clearly visible. This mechanism is realized by a set of gears called “differential devices”. The genius of the differential device lies in its ability to integrate two independent input sources into the same output source. The civilian minute indication is driven by the main wheel train of the timepiece. The information of the time equation is read through the stylus that runs with the cam. In this way, this differential device can effectively use the formula for calculating solar time (civilian time plus the time equation difference) and indicate it through the solar hour and minute hands. With two minute hands, the wearer can read civil time and solar time at the same time.
The operation of the time equation of this Marine nautical series timepiece is coordinated with the perpetual calendar. The movement takes into account irregularities in the calendar cycle every four years, including months of 30 or 31 days, and February of 28 days or 29 days in a leap year. This calendar is uniquely displayed in Breguet timepieces, showing a newly created institution. The day of the week and the month are not indicated by the pointer, but displayed by the window. The date indication is completed by a “retrograde” hand. The pointer moves along a fan-shaped area until midnight at the end of the month, it will change the direction of travel, instantly bounce back to the “1” position, and start the next month.
The movement of this large complex timepiece is derived from the ultra-thin self-winding tourbillon 581 movement. The basic concept of tourbillon design is rooted in the patent of Abraham-Louis Breguet, and it has never changed: the elements of the timekeeping of the watch, the balance wheel, hairspring and escapement are placed in a frame that rotates once per minute Among them, to offset the travel time error caused by gravity. Modern technology has also played a prominent role in the design of the tourbillon. The cage of the tourbillon is made of titanium, and the balance spring and escape wheel are made of silicon. Due to the redesign of the tourbillon mechanism, the frame is driven by an external gear train. The tourbillon and all its parts seem to be floating in the air. In the process of seeking to reduce the thickness, the barrel has not been ignored. By making a groove around the drum box and fixing it with three bearing components on the outside, Breguet designers were able to reduce its thickness by 25%. In order to contrast with other display windows on the dial, the power reserve is displayed on the instrument panel at 8 o’clock on the dial.