Place the ingenious Analytics Clip on your watch and launch the Analytics App, available for iOS and Android. Within seconds, Frederique Constant Analytics measures the accuracy of your mechanical watch. It measures the precision of mechanical watches, with an accuracy of at least ±0.2s/day.
An oscilloscope shows the audio waveform in real time. The result is plotted in a chart, which can be saved for later reference.
Also, Analytics can record and save a long-time measurement, e.g. for 12 hours, to analyze the long-time performance of your watch.