Comparing blood pressure measurements between a photoplethysmography-based and a standard cuff-based manometry device
30 September 2020
By Dean Nachman, Yftach Gepner, Arik Eisenkraft
Thank you!
Looks like they are very accurate...................
My cheap Chinese watch does this, same sort of technology. Not accurate as to absolute level in this implementation, but reliably indicates significant excursions from normal (for wearer) range.