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The NOWATCH is supported by the Philips’ libraries, which have shown a 98% overlap with the Polar, outperforming the Apple Watch by 4% and the Garmin Vivoactive 3 by 13% for data extracted from the PPG sensor (i.e. heart rate, heart rate variability, and breathing rate).

It is also more accurate in classifying different types of activity such as sitting, drinking, cycling at different speeds, and running at different speeds, with 14/15 accuracy compared to 9/15 for the Apple Watch and 13/15 for the Garmin Vivoactive 3.