For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t only a product of tech but a evidence to lasting excellence and accuracy. It signifies a timepiece that: Supplies great dependability and precision. Lange & Söhne. I’ll describe why: the German brand stepped onto the chronograph stage with their Substantially-praised Datograph https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/