it hasToday it mainly uses the name Conquest Longines for its sports watches, although the roots of this collection date back to the 20th century. To be precise, it is April 3, 1954. The southern watch house filed a patent at the Federal Office of Intellectual Property in Bern, Switzerland for its line of Conquest watches. This marks the first step of a new product development strategy and the launch of the first range of Conquest Longines timepieces. Original watch, Longines Conquest ref. 9001, presented in a slim 35mm yellow gold case, with its bevelled gold-reflected dial and a champlevé enamel medallion inlaid on the back with the “Longines quality gold seal”. A reference at the forefront of chic and elegance, reinterpreted in 2014 for the 60th anniversary of the collection through Conquest Heritage 1954-2014.
Five years after this ‘springboard to success’, in the words of Longines, in 1959 (the same year the brand’s first high-frequency wrist chronometer was released), the Saint-Imier manufacturer released the new Conquest Central. Energy Reserve The latter was equipped with a special power reserve indicator, which was displayed for the first time in the center of the dial on rotating disks. A complication that is changing shape with the new Conquest Heritage Central Power Reserve.
The new system invented by Longines
The power reserve indicator allows the watch wearer to know how long their mechanical watch can continue to operate. It first appeared in wristwatches in the 1940s with the Jaeger-LeCoultre Powermatic. System, by Antoine-Louis Breguet (son of Abraham-Louis Breguet) in the 19th century. Although it was invented in the 19th century, with the proliferation of automatic wristwatches there was a greater demand. Back in the days when cell phones weren’t used to check the time, it was essential to have a visual indication of whether or not your watch was about to stop. Unlike its competitors, Longines has implemented the complication in a completely new way.
Instead of a simple sub-scale with a moving hand, the Central Power Reserve watch had an indicator like no other and which Longines has updated. It consists of two overlapping discs, which occupy most of the center of the dial. As the mainspring is wound, either by automatic movement (as in the new Conquest Heritage Central Power Reserve) or manual winding, the outer disc rotates clockwise to higher numbers as the power reserve increases. The latter is numbered and rotates until it aligns with the black rectangle represented on the internal disk “64”, which is the power reserve indicator.
From there, the two discs rotate together to indicate that the watch is fully wound, with approximately 64 hours of power reserve. Finally, while the watch is running normally, the inner disc rotates clockwise until the black rectangular indicator on the outer disc reaches “0”. A priori, the watch is not running and needs to be recharged. This loading is done by operating the crown or by the movement of the wrist, which drives the automatic winding device and the rotation of the rotating disc.
From champagne to black or anthracite
On the outside, the three new Conquest Heritage Central Power Reserves are adorned with a 38mm steel case, slightly leaner than the 1950s versions. It has satin and polished surfaces, as well as a sapphire crystal with multiple treatments. -Anti-reflective layer on both sides.
True to the original piece, these Conquest Heritage use fine circular thread. The latter is available in three colors: champagne, black or anthracite. A date window appears at 12 o’clock in an aperture decorated with a trapezoidal applique similar to the 1959 clock.
Finally, in terms of mechanics, Longines has equipped its Conquest Heritage Central Power Reserve with a new automatic caliber that can be admired through the transparent screw-down caseback. It is equipped with silicon hair power with a resistance to magnetic fields that exceeds the ISO 764 reference standard by ten times and offers a power reserve of 72 hours.