Garmin launches feature-packed Forerunner 745, with blood oxygen and stress monitoring | TechRadar
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fēnix 6 Pro Series - Pulse Oximeter
Forerunner 245/245 Music - Getting Pulse Oximeter Readings
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