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Understanding COSC Certification and Its Importance in Watchmaking COSC Certification and its Rigorous Criteria COSC, or the Controle Officiel Suisse des Chronometres, is the authorized Swiss testing agency that verifies the precision and precision of wristwatches. COSC accreditation is a sign of superior craftsmanship and trustworthiness in timekeeping. Not all timepiece brands follow COSC certification, such as Hublot, which instead follows to its own strict criteria with mechanisms like the UNICO calibre, achieving equivalent accuracy. The Science of Precision Chronometry The central system of a mechanical watch involves the mainspring, which delivers energy as it unwinds. This mechanism, however, can be susceptible to environmental elements that may affect its accuracy. COSC-certified movements undergo rigorous testing—over fifteen days in various conditions (five positions, three temperatures)—to ensure their durability and reliability. The tests assess: Average daily rate precision between -4 and +6 secs. Mean variation, maximum variation levels, and effects of temperature changes. Why COSC Certification Is Important For timepiece aficionados and connoisseurs, a COSC-validated timepiece isn't just a piece of technology but a proof to enduring excellence and accuracy. It symbolizes a watch that: Presents exceptional dependability and precision. Provides confidence of quality across the complete construction of the timepiece. Is probable to maintain its value better, making it a smart choice. Well-known Timepiece Brands Several famous brands prioritize COSC certification for their timepieces, including Rolex, Omega, Breitling, and Longines, among others. Longines, for instance, provides collections like the Record and Spirit, which highlight COSC-validated mechanisms equipped with cutting-edge materials like silicon balance suspensions to improve resilience and performance. Historic Context and the Evolution of Timepieces The concept of the timepiece dates back to the requirement for accurate chronometry for navigational at sea, highlighted by John Harrison's work in the eighteenth century. Since the official foundation of COSC in 1973, the accreditation has become a yardstick for judging the accuracy of high-end watches, maintaining a tradition of excellence in watchmaking. Conclusion Owning a COSC-validated watch is more than an visual selection; it's a dedication to quality and precision. For those valuing accuracy above all, the COSC certification provides peace of mind, ensuring that each accredited watch will function reliably under various conditions. Whether for individual contentment or as an investment decision, COSC-accredited watches stand out in the world of horology, bearing on a tradition of careful timekeeping.

Quando hai scartucciato i tape attaccavano alle dita? Potrebbe essere il tape "difettoso". Molti anni fa mi è successa una cosa simile e credo fosse dovuto all'alimentazione. Ora adotto un'alimentazione molto più sana e non è più capitato.

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