ISO

ISO is the abbreviation for the International Organization for Standardization, an Institution that develops and publishes technical standards in a very wide range of fields, including watchmaking, in addition to the standards specific to the Swiss watch industry (NIHS). These standards define internationally recognized measurement, testing, and quality criteria, making it easier to compare products and building consumer confidence. Several of them relate directly to watches: ISO 3159 sets the measurement and Testing criteria for chronometers (rate in different positions and temperatures); ISO 22810 governs the requirements for water-resistant watches, while others cover resistance to magnetism or shocks. Compliance with an ISO standard certifies that a product meets objective, verifiable requirements. For watchmaking, this regulatory framework helps guarantee reliability, safety, and fair information, particularly regarding claimed properties such as Water resistance or chronometric precision.