OFFICIALLY CERTIFIED CHRONOMETERS
From the end of the 19th century, Swiss watchmakers wanted the precision of their watches to be verified by an independent organization. The C.O.S.C. was founded in 1973 and has become the universal reference. Its famous certificate is the recognition of excellence in the field of precision movements and is only issued for certain rare models of the leading watchmakers. To meet the high-performance criteria and obtain the certificate, TAG Heuer movements submitted for testing have received particularly careful attention in the manufacture of their components and during assembly.
TAG Heuer's CERTFIFIED MOVEMENTS
Each model that is officially certified as a chronometer is given a booklet and a C.O.S.C. card by TAG Heuer. The individual number printed on the card corresponds to the number engraved on the movement that has been certified by the Official Swiss Chronometer Control. Each of these movements is a unique object that has been produced with the greatest possible care and is an authentic masterpiece of watchmaking. The C.O.S.C. Chronometer Certificate: a sign of very high precision and quality.