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:: yes and yes All those bands which do not register any heart rate increase if the one hand they were on was held still. I have run into at least 3 ex miband 3. If you want one like then just search for cheap smartwatches on amazon. I suppose the expensive new wearables do the "help ppg out with accelerometry" thing and that is not at all what I am talking about.
:: yes and yes All those bands which do not register any heart rate increase if the one hand they were on was held still. I have run into at least 3 ex miband 3. If you want one like then just search for cheap smartwatches on amazon. I suppose the expensive new wearables do the "help ppg out with accelerometry" thing and that is not at all what I am talking about.
::: Ah, got it. So basically some cheap devices basically don't do PPG at all but rather make up the numbers just based on how much movement the accelerometer registers. - [[User:Gedankenstuecke|Gedankenstuecke]] ([[User talk:Gedankenstuecke|talk]]) 07:31, 6 July 2022 (UTC)