Vacheron Constantin Watches has been providing the highest quality Swiss luxury watches to men and women around the world. Purchase online today. Founded in Geneva in 1755 by Jean-Marc Vacheron, Vacheron Constantin is the world’s oldest watch manufacturer in continuous production for over 260 years. Over the centuries they have led the way to new never before seen watch complications unveiling some of the world’s most complicated watches. Today Vacheron Constantin crafts nearly a dozen legendary lines and is a totally integrated manufacture building everything in-house in Geneva.