The Precision of the Rolex Superlative Chronometer is in the get of −2/+2 seconds a day – the speed deviation tolerated by the model for just a concluded view is considerably scaled-down than that recognized by COSC for Formal certification of the motion on your own. The Superlative Chronometer standing https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/