ONEOF Accuracy2

The new measurement tool for mechanical watch lovers.

ragonfly Technology. Every sound counts.

Accuracy2 is made of an ultra sensitive sensor which is capable of detecting every single vibration in the movement of a mechanical watch. Each of these small vibrations is converted into an audio signal, highly amplified, digitalized and transmitted to the device where every second, complex algorithms process tens of thousands of data.

A step ahead, once again.

While other connected measurement tools on the market work only with the analog and disappearing audio jack connector, ONEOF engineers clearly anticipated and developed a brand new digital audio electronic system based on the commonly used USB standard.

Measure your watch in a split-second.

The new Accuracy app developed by our engineers automatically detects the presence of your watch on the sensor. Just after a few seconds of initialization, you get all the detailed technical information you need in a professional and user-friendly app.

iOS 9 / Android 6 (and later)
Connector: USB-type C
Dimensions: 40 x 40 x 7.5 mm
Weight: 20g

Aluminium unibody
2-year international warranty

Note:Apple devices require a genuine Apple Lightning to USB adapter (optional)
For Android devices, an OTG micro USB adapter is included.