The Precision of the Rolex Superlative Chronometer is from the buy of −two/+two seconds every day – the speed deviation tolerated from the brand to get a completed observe is drastically scaled-down than that approved by COSC for Formal certification from the motion on your own. The Superlative Chronometer standing https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/