The Precision of the Rolex Superlative Chronometer is with the get of −2/+two seconds on a daily basis – the speed deviation tolerated through the brand name to get a finished watch is substantially more compact than that recognized by COSC for official certification of the movement on your own. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
Chronometer watches - An Overview
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