The Precision of the Rolex Superlative Chronometer is in the buy of −2/+2 seconds per day – the rate deviation tolerated via the brand for the concluded observe is noticeably smaller sized than that accepted by COSC for official certification with the motion alone. The Superlative Chronometer position is symbolized https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/