Detect every single vibration in your mechanical watch’s movement with the ONEOF Accuracy² watch measurement tool. Featuring an ultra-sensitive sensor, this watch accessory detects vibrations and then converts them into an audio signal to process tens of thousands of data. This data includes the amplitude of the balance wheel, frequency of the escapement, and more. With this information to hand, you can detect your watch’s health. Furthermore, this watch measurement tool is easy to use: simply scan your watch to see if it suffers from magnetization. Within a few seconds of initialization, the app will provide all of this detailed, technical information. Best of all, the ONEOF Accuracy² is a stand-alone device that doesn’t require batteries or a power supply.