The Precision of the Rolex Superlative Chronometer is in the purchase of −2/+two seconds each day – the speed deviation tolerated from the brand name for any concluded enjoy is significantly scaled-down than that approved by COSC for Formal certification from the motion alone. The Superlative Chronometer standing is symbolized https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/