The Precision of a Rolex Superlative Chronometer is on the order of −2/+2 seconds every day – the rate deviation tolerated with the manufacturer for your concluded look at is substantially scaled-down than that acknowledged by COSC for Formal certification in the movement on your own. The Superlative Chronometer standing https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/