The Precision of the Rolex Superlative Chronometer is of the order of −two/+two seconds every day – the rate deviation tolerated with the brand for your finished look at is drastically scaled-down than that accepted by COSC for Formal certification in the motion by itself. The Superlative Chronometer standing is https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/