Where is the COSC testing Centre based in Switzerland?
La Chaux-de-Fonds
Founded in 1973 and based in La Chaux-de-Fonds, the Official Swiss Chronometer Testing Institute (COSC) is a not-for-profit organisation recognised as serving the public interest, dedicated to Swiss watchmaking.
What is chronometer Officially Certified?
According to COSC, an official certified chronometer is a high precision watch capable of displaying the seconds and housing a movement that has been tested over several days, in different positions, and at different temperatures, by an official, neutral body (COSC).
How do I know if my watch is COSC certified?
Each officially COSC certified chronometer is identified by a serial number engraved on its movement and a certification number given by the COSC.
What is a COSC certification?
The Controle Officiel Suisse des Chronometres (COSC) is a neutral and impartial Swiss non-profit organization. They work independently of watchmakers. Their goal is to certify the finest quality Swiss watches through rigorous testing of a watch’s internal timekeeping components.
How accurate is a COSC certified watch?
COSC-certified watches have an average accuracy of -4/+6 seconds per day. On the other hand, Quartz movements go through a similar test albeit only last 13 days. While its criteria are less numerous than mechanical timepieces, the tolerance levels on Quartz movements are much more stringent.
How accurate is a certified chronometer?
COSC: In a Nutshell Chronometers are high precision watches. Watches that earn this certification have an average accuracy of -4/+6 seconds per day. Mechanical watches undergo a 15-day testing process, while quartz movements undergo 13 rigorous days of intense testing.
How accurate is a COSC watch?
What is the accuracy of a chronometer?
Today, marine chronometers are considered themost accurate portable mechanical clocks ever made. They achieve a precision of around a 0.1 second loss per day. Importantly, this equates to an accuracy that can locate a ship’s position within just 1–2 miles (2–3 km) after a month at sea.
What does IWC watch stand for?
International Watch Co.
Since they first combined cutting edge American engineering with Swiss craftsmanship in 1868, IWC (“International Watch Co.”) has continually pushed the boundaries of the luxury watch industry.