ZENITH Solidifies its Global reputation because the main manufacturer of precision chronometers and instruments across quite a few domains. ZENITH launches the 135-Observatoire constrained version, making the acclaimed 135 calibre, serial winner on the Worldwide Chronometry competitions, commercially accessible for the pretty initially time in its Observatory variant ! All https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/