The Precision of a Rolex Superlative Chronometer is of the purchase of −2/+2 seconds daily – the speed deviation tolerated via the model for just a completed check out is substantially scaled-down than that recognized by COSC for Formal certification of your movement by itself. The Superlative Chronometer standing is https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/