Exclusively Swiss watchmaking

While the objective of the COSC is to certify the accuracy of a watch movement, as a not-for-profit organisation in watchmaking recognised as serving the public interest, its mission is to be work exclusively for the Swiss watchmaking industry.

By only assessing Swiss-made movements and watches, the COSC highlights its desire to promote this prestigious label. All movements that are sent to the COSC must therefore be guaranteed Swiss-made and reputed to be dedicated to watch brands themselves carrying a manufactuer's Swiss-made label.