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The ONEOF Accuracy2 is a small yet robust acoustic measurement device designed for testing the accuracy of mechanical watches, and can easily fit in your pocket.

Automatic detection of common beating frequencies: 7,200 to 72,000 b/h

Rate accuracy range: +/- 1000s/d

Rate accuracy precision: +/- 0.1s/d

Amplitude range: 70° to 360°

Amplitude precision: +/- 1°

Beat error range: 0 to 10 ms

Beat error precision: +/- 0.1 ms

USB-C cable to USB-A included

Apple lightning to USB-A adapter included

Works with Windows 10, 1803 and later

Works with iOS 15 and later

Size: 40 x 40 x 8mm

ST-6087 ONEOF® Accuracy2, compact and powerful acoustic measurement device for testing the accuacy of mechanical watches BERGEON 8805-ACC2