It is a sublime implementation of the common complication – beside the world timer, it nevertheless has every one of the trademarks of Voutilainen, highlighted by that wonderful guilloche dial. If the Omega has the text 'Master Chronometer' on the dial—as is witnessed during the Seamaster Diver 300M—you may be https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/