For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t only a item of tech but a evidence to lasting excellence and accuracy. It represents a timepiece that: Presents fantastic dependability and precision. There you've got it, 5 brands that have performed a large job in the event of the chronograph. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/