Are there any differences to the Polar OH1 as far as accuracy is concerned which should be validated by a scientific study? https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0217288 Polar made firmware update which increases the battery life from around 20 hrs to up to 30 hrs without changing the hardware for the Verity Sense (see comments): https://www.dcrainmaker.com/2021/02/polar-verity-sense-optical-hr-sensor-band-in-depth-review.html Was the increase …
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