For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t just a item of tech but a proof to lasting excellence and precision. It represents a timepiece that: Offers superb dependability and precision. Tissot traces its extended heritage again to 1853, when it was Established by the father-son staff of Charles-Félicien https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/