To adjust to the new e-Privacy directive, we have to inquire in your consent to established the cookies. Find out more So In case your Omega has the words and phrases ‘Master Chronometer’ around the dial—as is found in this signature Omega Seamaster Diver 300M Co‑axial Master Chronometer—you'll be able https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/