The Precision of the Rolex Superlative Chronometer is in the get of −2/+2 seconds every day – the speed deviation tolerated from the brand for any concluded observe is appreciably smaller than that accepted by COSC for Formal certification from the motion alone. The Superlative Chronometer standing is symbolized because https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/