Seiko Discover More Ssb399P1 gw0104l2 600 (3 Hz) vph

600 (3 Hz) vph

whose movement includes a single-crystal silicon balance spring with unique properties

All of these characteristics come together to make this line an essential part of the Longines collection

Push / pull crown

Seiko Discover More Ssb399P1 gw0104l2 600 (3 Hz) vphThe 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,