In 1913, Blériot Recalls ZENITH’s precision with these terms that he shared while in the brand’s guestbook: “I'm really satisfied with the ZENITH observe which I ordinarily use and I are unable to advise it hugely enough to those who care about precision”. There you might have it, 5 brands https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/