Omega Introduced its Constellation Globemaster, the main timepiece branded While using the “Learn Chronometer” designation, in 2015. Watches with this accolade — which now comprise the lion’s share of Omega's output — have not just aced the tests needed for COSC chronometer certification but have been subjected to a different, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/