Omega Launched its Constellation Globemaster, the primary timepiece branded With all the “Master Chronometer” designation, in 2015. Watches with this accolade — which now comprise the lion’s share of Omega's output — have don't just aced the tests needed for COSC chronometer certification but are actually subjected to a different, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/