The Precision of the Rolex Superlative Chronometer is on the buy of −two/+2 seconds per day – the speed deviation tolerated from the brand for any completed look at is appreciably scaled-down than that approved by COSC for Formal certification in the movement by yourself. The Superlative Chronometer position is https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/