News 
After more than 50 years of existence, the Contrôle Officiel Suisse des Chronomètres (COSC) – Official Swiss Chronometer Testing Authority – is on the cusp of a new era. Thanks to a redefined positioning, a revamped visual identity and a strong commitment to promoting Swiss watchmaking excellence, it is now aimed not only at Swiss watch brands, but above all directly to consumers.
Since 1973, the COSC has been certifying the precision of watch movements. More than just accuracy, it is the guarantor of quality, reliability, and durability of every movement that passes through its laboratories, earning them the famous “Certified Chronometer” label on their dials. Today, the COSC unites over 60 brands under a shared commitment to excellence, strengthening the global reputation of Swiss watchmaking. Consumers don’t need to worry about the technical details - owning a COSC-certified watch is a mark of excellence they can trust.
With a new logo, signature, website, active social media presence, and a content-rich newsletter, the COSC is amplifying its message like never before. The goal is clear: to establish COSC as a brand in its own right, not just a certification label, and to enhance its visibility among the public. Looking ahead, the COSC and its partner brands will introduce new certification cards for consumers, granting them access to precise data on their watch’s tested movement. As a neutral and independent authority, the brand provides customers with the ultimate assurance.
The entity aims to bring its partner brands together under a shared mission: certifying Swiss excellence. Moving forward, these brands will gain visibility across all COSC communication channels, with ready-made content to amplify their message. Brands will benefit from growing recognition through proactive outreach to the end customer. They’ll also enjoy the global impact of this new momentum. With direct access to test results for each movement, brands will be able to offer buyers an exclusive insight into the precision at the heart of their timepiece.
April 17, 2025