The Precision of a Rolex Superlative Chronometer is of your buy of −2/+2 seconds a day – the rate deviation tolerated from the brand for just a finished watch is substantially scaled-down than that acknowledged by COSC for Formal certification of the movement alone. The Superlative Chronometer position is symbolized https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/