In 1913, Blériot Remembers ZENITH’s precision with these words that he shared within the model’s guestbook: “I'm really pleased with the ZENITH observe which I generally use and I can't propose it extremely plenty of to individuals that treatment about accuracy”. ZENITH launches the one hundred thirty five-Observatoire constrained version, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/