Longines La Grande Classique L4.709.1.57.7 ncth1791849 42-hour power reserve

42-hour power reserve

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Antiqued GP

Case diameter: 36 mm

Exhibiting a black round dial

Longines La Grande Classique L4.709.1.57.7 ncth1791849 42-hour power reserveThe machinery inside a watch that keeps things ticking is called the movement or a calibre. A synonym of size, the word calibre, first used as a watchmaking term in 1715, originally referred to the build of a watch movementthe layout, dimensions, shape and size of the wheels, barrels, bridges and so on. Today the word is a substitute for movement, the complete mechanism with the mainspring, escape wheel, bridges, gear train, and other components,