The Precision of the Rolex Superlative Chronometer is of your purchase of −2/+2 seconds each day – the rate deviation tolerated because of the brand for the concluded enjoy is appreciably scaled-down than that accepted by COSC for official certification of your motion by yourself. The Superlative Chronometer standing is https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/