Chronometer and COSC Watches Explained

What is a Chronometer or COSC Watch

Did you come across a chronometer watch? You might be wondering how it’s different from a regular wristwatch. A chronometer watch is required to meet specific accuracy requirements in various tests. For a mechanical watch to a chronometer, it must measure a daily average accuracy within -4 to +6 seconds per day during testing. Quartz … Read more