(THIS APP NEEDS A SPECIFIC SENSOR AVAILABLE AT WWW.ONE-OF.COM)

ONEOF® Accuracy² -> Small, fun, powerful. For watch lovers.
ONEOF® Accuracy boutique edition -> Measures & demagnetizes simultaneously. For watch boutiques.
ONEOF® Accuracy Pro -> The new generation multi-position measurement system. For watchmakers.

For several years, we have been developing the most accurate and precise diagnostic instruments to fulfill the highest requirements of Swiss Watch Manufactures. Today, ONEOF® Accuracy gives watch aficionados the opportunity to acquire the only high-end integrated tool capable of providing a complete diagnosis of a mechanical watch on an iPhone.

Just place the crown of your watch against the ONEOF® Accuracy sensor and after a few seconds of initialization, you get all the detailed technical information about your watch in a fun and user-friendly app : beats per hour, instantaneous and average rate accuracy in seconds per day, amplitude of the balance wheel, beat error, signal analyzer as well as graph... You then have the possibility to save all the results in your watch database and share them.