The Precision of a Rolex Superlative Chronometer is with the order of −2/+two seconds per day – the rate deviation tolerated by the manufacturer for your concluded observe is noticeably scaled-down than that recognized by COSC for Formal certification with the motion on your own. The Superlative Chronometer standing is https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/