Valjoux 7750 complete balance 721

Valjoux

Valjoux is a historic Swiss movement manufacturer best known for its legendary mechanical chronograph calibres. Founded in the early 20th century in the Vallée de Joux, Valjoux produced reliable and widely used movements for many respected watch brands, including Heuer, Breitling, Rolex, Omega, and many others. Its calibres, such as the Valjoux 72 and Valjoux 7750, are admired for their durability, serviceability, and important role in the development of modern chronograph watches.

Balance with Hairspring

A balance with hairspring is a key regulating assembly in a mechanical watch movement. The balance wheel and hairspring work together to control the rhythm of the movement, directly affecting accuracy and stability. These assemblies are often used in repairs when the original balance, hairspring, or pivots are damaged, worn, magnetized, or no longer performing correctly.