The Precision of a Rolex Superlative Chronometer is on the get of −two/+2 seconds per day – the speed deviation tolerated via the brand for any finished enjoy is noticeably smaller than that acknowledged by COSC for Formal certification with the motion by itself. The Superlative Chronometer position is symbolized https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/