Omega Launched its Constellation Globemaster, the very first timepiece branded While using the “Master Chronometer” designation, in 2015. Watches using this accolade — which now comprise the lion’s share of Omega's output — have not just aced the exams required for COSC chronometer certification but have been subjected to another, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/