Hanhart Unveils the AQUASPHERE Ocean Fade

Hanhart has remained true to its roots while evolving with modern expectations, and today, its timepieces reflect a refined balance of heritage craftsmanship and technical innovation. One of the brand’s most robust contemporary lines is the AQUASPHERE collection, a series of diving watches purpose-built for professionals and demanding enthusiasts alike. This summer, the collection welcomes a new addition, the AQUASPHERE Ocean Fade.

Glossary

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Glossary
COSC

COSC

Contrôle Officiel Suisse des Chronomètres, is an independent Swiss organization responsible for certifying the performance and accuracy of mechanical watches through a series of tests on watch movements. It is considered one of the highest standards in the watch industry for measuring the performance and accuracy of watches.

The watch movement undergoes a series of rigorous tests and measurements under various temperature conditions over a specified period, typically up to 15 days. These tests evaluate the performance and accuracy of the watch.

To achieve the COSC certification, the average daily rate of the watch must fall within a specific range of -4 to +6 seconds per day. This means that the watch should not deviate more than -4 to +6 seconds from the exact time over a 24-hour period. Additionally, the movement must meet specific criteria for accuracy, stability, and reliability.