Understanding Pulse Ox | You've heard of Pulse Ox, but what exactly does it do? Pulse oximeter sensors in Garmin watches measure SpO2, the % of oxygenated blood in your... | By
![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 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](https://i.redd.it/d7n5yy3i6zz51.jpg)
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
![Amazon.com: Garmin Fenix 6X Pro Solar, Premium Multisport GPS Watch with Solar Charging, features Mapping, Music, Grade-Adjusted Pace Guidance and Pulse Ox Sensors, Dark Gray with Black Band (Renewed) : Electronics Amazon.com: Garmin Fenix 6X Pro Solar, Premium Multisport GPS Watch with Solar Charging, features Mapping, Music, Grade-Adjusted Pace Guidance and Pulse Ox Sensors, Dark Gray with Black Band (Renewed) : Electronics](https://m.media-amazon.com/images/I/41joaGjC9UL._AC_.jpg)