Omega Launched its Constellation Globemaster, the first timepiece branded with the “Learn Chronometer” designation, in 2015. Watches with this accolade — which now comprise the lion’s share of Omega's output — have not merely aced the tests expected for COSC chronometer certification but are actually subjected to another, a lot https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/