The « Observatoire Chronométrique +» certification is opened to all mechanical watches made in Switzerland. It grants a watch to use the prestigious and official « montre chronomètre » title, according ISO/CEI 3159 international standard. Furthermore , the guarantee also extends to other features related to its reliability such as water resistance, magnetism resistance, power reserve or wearing simulation.
Each finished watch is individually tested and fully controlled.
The « Observatoire Chronométrique +» certification is based on dual acknowledgement : from a state one (under the authority of the Republic and Canton of Geneva) and from a technical one (under the accreditations delivered by the SAS (Service of Accreditation of Switzerland))