The Precision of a Rolex Superlative Chronometer is of your buy of −2/+two seconds daily – the rate deviation tolerated through the brand for your concluded enjoy is noticeably scaled-down than that accepted by COSC for Formal certification of the movement by itself. The Superlative Chronometer status is symbolized from https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/