The Precision of a Rolex Superlative Chronometer is in the get of −2/+2 seconds per day – the speed deviation tolerated by the model for a concluded view is noticeably more compact than that acknowledged by COSC for Formal certification in the motion alone. The Superlative Chronometer standing is symbolized https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/