Omega Introduced its Constellation Globemaster, the 1st 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 merely aced the tests required for COSC chronometer certification but have already been subjected to another, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/