OneOf Accuracy BoutiqueThe ONEOF Accuracy boutique edition is the first ever connected tool capable of measuring and demagnetizing a mechanical watch at once. It was designed in unique partnership with famous Swiss watch brands to deliver the most efficient solution to watch magnetization a powerful and easy to use tool able to solve the problem directly Measure & displays accuracy, accurate to + 0. 1 second per day Automatically detects the most common beats (movement