Omega Introduced its Constellation Globemaster, the initial timepiece branded Using the “Master Chronometer” designation, in 2015. Watches using this type of accolade — which now comprise the lion’s share of Omega's output — have not only aced the checks required for COSC chronometer certification but have already been subjected to https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/