A chronometer is an extremely accurate timepiece that passes strict tests: the performance under the Official Swiss Chronometer Testing Institute (COSC) standards has been tested. A chronometer-certified watch boasts extremely high reliability because it retains accurate timekeeping over strict parameters under varied conditions. Chronometers are held to great high standards regarding accuracy, and the finest of them are generally made using high-grade materials and components that ensure accuracy for a long time.
A watch labeled as such is in high demand among collectors and collectors because it epitomizes dedication to precise timekeeping and is one of the high standards in fine watchmaking.
