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Intro
What is a COSC certifed watch?
What does Superlative Chronometer mean? (Rolex)
Why does a watch's accuracy matter?
What is a METAS Master Chronometer? (Omega, Tudor)
Why does anti-magnetism matter in a watch?
What does the Jaeger LeCoultre 1000 Hours Master Control test?
Do any of these watch certifications really matter?