The Precision of the Rolex Superlative Chronometer is on the buy of −two/+2 seconds a day – the speed deviation tolerated with the brand name for just a finished observe is drastically scaled-down than that acknowledged by COSC for official certification from the motion by itself. The Superlative Chronometer standing https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/