Originally Posted by
Seattle Forrest
I see. FirstBeat tech comes with some Garmin products, in fact Garmin bought FirstBeat. So it is related to HRV as I guessed. I found:
https://www.kup.at/kup/pdf/39.pdf
These Garmin devices come with FirstBeat tech:
https://support.garmin.com/en-US/?fa...x53UDqUH7q4WC6
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