Despite the SpO2 / pulse ox being not for medical use, I'm still disappointed in its accuracy. The pulse oximeter on my 245 is consistently out by 7-15%. Pretty much useless, even
Wie gut eine Sportuhr die Sauerstoffsättigung misst - Galaxus
Forerunner 245's pulse ox inaccurate? 90% is not normal for someone who doesn't smoke and who's not out of breath. Plus most of the time they struggle to get a reading. What's
Forerunner 245/245 Music Owners Manual - Getting Pulse Oximeter Readings