For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t only a item of tech but a proof to Long lasting excellence and accuracy. It signifies a timepiece that: Gives great dependability and precision. Pierre Jaquet-Droz (1721-1790), founder of the fashionable watchmaking household that bears his title, was not merely Probably https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/