It's a sublime implementation of a traditional complication – beside the world timer, it nonetheless has all the trademarks of Voutilainen, highlighted by that lovely guilloche dial. Should your Omega has the terms 'Grasp Chronometer' to the dial—as is found while in the Seamaster Diver 300M—you can be assured that https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/