The Precision of a Rolex Superlative Chronometer is with the get of −two/+2 seconds daily – the speed deviation tolerated from the manufacturer for the completed watch is noticeably smaller sized than that approved by COSC for Formal certification from the movement on your own. The Superlative Chronometer position is https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/