For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t only a merchandise of tech but a proof to Long lasting excellence and precision. It represents a timepiece that: Gives superb dependability and precision. Tissot traces its extended background again to 1853, when it had been Started by The daddy-son workforce https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/