The Precision of a Rolex Superlative Chronometer is on the order of −2/+2 seconds every day – the speed deviation tolerated because of the brand name for any finished check out is considerably smaller than that approved by COSC for Formal certification with the movement by yourself. The Superlative Chronometer https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
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