The Precision of the Rolex Superlative Chronometer is of your purchase of −two/+2 seconds per day – the speed deviation tolerated via the model for a completed view is appreciably lesser than that accepted by COSC for Formal certification with the movement by itself. The Superlative Chronometer standing is symbolized https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/