For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t just a merchandise of tech but a evidence to lasting excellence and accuracy. It represents a timepiece that: Gives excellent dependability and precision. Together with his colleague Thomas Earnshaw, the pair would develop simplified and sensible marine chronometers. Wade B. January https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/