The Precision of the Rolex Superlative Chronometer is from the buy of −two/+2 seconds per day – the speed deviation tolerated with the manufacturer to get a finished check out is noticeably scaled-down than that acknowledged by COSC for official certification with the motion alone. The Superlative Chronometer status is https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/