The Precision of a Rolex Superlative Chronometer is of the order of −2/+2 seconds daily – the speed deviation tolerated from the brand name to get a concluded look at is appreciably smaller sized than that recognized by COSC for Formal certification from the motion by yourself. The Superlative Chronometer https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
Chronometer watches - An Overview
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