The Precision of the Rolex Superlative Chronometer is in the buy of −two/+2 seconds each day – the rate deviation tolerated via the manufacturer for the completed check out is noticeably lesser than that accepted by COSC for Formal certification with the movement by yourself. The Superlative Chronometer status is https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/