Pursuing “Swiss Excellence”: COSC Rebrands and Expands Public Access

The Contrôle Officiel Suisse des Chronomètres (COSC), Switzerland’s official independent chronometer testing authority, is entering a new phase after more than 50 years. With a refined strategy, updated branding, and a commitment to strengthening the reputation of Swiss watchmaking, COSC is now engaging directly with both watch brands and consumers.

This evolution marks a significant shift for the organization, which has historically operated behind the scenes, certifying the precision and reliability of watch movements. The institution now seeks to enhance its visibility and position itself as a recognizable authority in fine watchmaking.

COSC’s Role in Swiss Watchmaking

Since 1973, COSC has been the leading independent certification body for Swiss chronometers. Its "Certified Chronometer" designation is a guarantee of accuracy, reliability, and durability. Watches that receive this certification must pass a series of rigorous tests, which evaluate performance under varied positions and temperature conditions.

Today, over 60 brands are united under COSC’s certification, adhering to a shared standard of excellence in precision timekeeping. While technical specifications may not concern every consumer, the COSC label ensures that a timepiece meets the highest standards.

Strengthening Visibility and Consumer Engagement

To reinforce its position in the watch industry, COSC has introduced several key initiatives aimed at enhancing its brand recognition:

• A new logo and corporate identity, emphasizing its role in fine watchmaking

• A redesigned website, offering a more user-friendly experience for both brands and consumers

• A dedicated newsletter, providing updates on chronometer testing and certified brands

• Active social media presence, educating the public on Swiss chronometer standards

• New certification cards, providing detailed data on tested watch movements

For watch brands, this modernization offers greater exposure within COSC’s official communication channels, strengthening their association with Swiss precision and reliability.

Official Statement from COSC Leadership

Commenting on the organization’s transformation, Andreas Wyss, Director of COSC, stated:

“It’s not just about redesigning a logo; it’s about showcasing what we do best—fine watchmaking—alongside our client brands. Certified by our three independent laboratories and 160 operators, we uphold the highest standards of precision and excellence. We serve a shared customer, ensuring they receive timepieces of unmatched quality. By certifying precision, embodying excellence, and making it known, we contribute to the global reputation of the Swiss watchmaking industry.”

The Future of COSC

With its expanded presence and new consumer-oriented approach, COSC is transforming into a recognized mark of quality rather than just a testing institution. This evolution is expected to:

• Increase public awareness of the importance of chronometer certification

• Provide greater transparency for consumers purchasing certified watches

• Strengthen collaborations with Swiss watch brands, reinforcing trust in high-precision timepieces

As COSC continues to modernize while upholding Swiss watchmaking traditions, its commitment to precision and excellence remains unchanged.

To learn more, visit COSC’s official website.