The Precision of the Rolex Superlative Chronometer is on the buy of −2/+2 seconds a day – the rate deviation tolerated from the model for a finished enjoy is noticeably more compact than that approved by COSC for Formal certification on the motion alone. The Superlative Chronometer standing is symbolized https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/