Valjoux

Valjoux (for Vallée de Joux, 'Joux Valley') is a Swiss manufacturer of mechanical watch movements based in L'Abbaye, Switzerland. The company is known primarily for chronograph ébauche movements, particularly the Valjoux 7750, one of the most widely used automatic chronograph movements in the world. Valjoux was acquired by ETA in 1983 and is now part of the Swatch Group. The Valjoux 7750 uses a three-plane cam system rather than a column wheel and was the first watch movement developed using computer-assisted design.