djb Baertschi SA, located at 7 rue du Soleil in Saint-Imier, Switzerland, draws on more than a century of experience in precision mechanics. Started as a sole proprietorship by Mr. Jean Baertschi, it was perpetuated by Mr. Charles Baertschi, who transformed it into a limited company, Charles Baertschi SA, which later became Baertschi Frères SA and finally djb Baertschi SA.