The Precision of a Rolex Superlative Chronometer is of your get of −two/+2 seconds daily – the rate deviation tolerated through the model for a concluded observe is drastically smaller sized than that recognized by COSC for Formal certification from the movement by yourself. The Superlative Chronometer status is symbolized https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/