To comply with The brand new e-Privacy directive, we must ask in your consent to established the cookies. Learn more So In case your Omega has the words and phrases ‘Grasp Chronometer’ within the dial—as is found in this signature Omega Seamaster Diver 300M Co‑axial Grasp Chronometer—you'll be able to https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/