In 1913, Blériot Recollects ZENITH’s precision with these phrases that he shared during the manufacturer’s guestbook: “I am incredibly content with the ZENITH view which I normally use and I can not endorse it hugely more than enough to people who care about accuracy”. ZENITH launches the 135-Observatoire constrained edition, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/