For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t simply a product of tech but a proof to lasting excellence and accuracy. It represents a timepiece that: Provides outstanding dependability and precision. Lange & Söhne. I’ll make clear why: the German manufacturer stepped on to the chronograph phase with their https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/