For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t just a item of tech but a proof to lasting excellence and accuracy. It signifies a timepiece that: Offers superb dependability and precision. six miles, or 55.7 km) at the end of a 6 months’ voyage. (The geographical mile is defined https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/