COSC stands for "Contrôle officiel suisse des chronomètres". This label certifies the precision of time measurement under high requirements. All Tissot® COSC watches come with a 3-year warranty, guarantying not only the best accuracy in time, but also in longevity.

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Guiness Six Nations

Sports Partnerships

Guiness Six Nations

In 2013, Tissot became the Official Timekeeper of the Guinness Six Nations Championship, the greatest annual rugby championship in the world. The sport of Rugby demonstrates many of the core values which are shared at Tissot, such as teamwork, respect, discipline and a love for sports. These Championships are therefore the perfect platform for Tissot to be showcasing its timing expertise in an exciting, international environment, which at the same time represents the brand’s spirit perfectly.