For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t only a product of tech but a proof to Long lasting excellence and precision. It signifies a timepiece that: Supplies excellent dependability and precision. ZENITH launches the 135-Observatoire constrained edition, generating the acclaimed 135 calibre, serial winner on the Global Chronometry https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/