The Precision of a Rolex Superlative Chronometer is on the get of −2/+two seconds per day – the rate deviation tolerated by the model for a completed view is significantly scaled-down than that approved by COSC for Formal certification of your motion by itself. The Superlative Chronometer status is symbolized https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/