Master Chronometer

Behind the elegance of every Master Chronometer timepiece is the highest level of testing: 8 tests over 10 days, to ensure superior precision and magnetic resistance. We’ve raised our standards. You can too.

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Swiss Confederation - Federal Institute of Metrology METAS

Double certification:
Metas and COSC

To own a MASTER CHRONOMETER is to be confident that your watch has been certified not once – but twice! The 8 stringent METAS tests your timepiece must face to earn the title MASTER CHRONOMETER can only begin with movements already certified by COSC (Official Swiss Chronometer Testing Institute). And it's a completely transparent testing process. If you want to know how your own watch performed during the 8 METAS tests, you can view the exact results by entering your certificate number online.

Discover the 8 tests