Pulse oximeter only tracks for a few hours during the night. - Forerunner 245 Series - Running/Multisport - Garmin Forums
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![Forerunner 245 Pulse Ox ridiculously inaccurate - Forerunner 245 Series - Running/Multisport - Garmin Forums Forerunner 245 Pulse Ox ridiculously inaccurate - Forerunner 245 Series - Running/Multisport - Garmin Forums](https://forums.garmin.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/399/20191117_5F00_145730.jpg)
Forerunner 245 Pulse Ox ridiculously inaccurate - Forerunner 245 Series - Running/Multisport - Garmin Forums
![Why Pulse Oximeter sp02 works at night only from 00 - 04 h - Forerunner 945 - Running/Multisport - Garmin Forums Why Pulse Oximeter sp02 works at night only from 00 - 04 h - Forerunner 945 - Running/Multisport - Garmin Forums](https://forums.garmin.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/400/Screenshot_5F00_20190608_2D00_075731.png)
Why Pulse Oximeter sp02 works at night only from 00 - 04 h - Forerunner 945 - Running/Multisport - Garmin Forums
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![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://preview.redd.it/d7n5yy3i6zz51.jpg?auto=webp&s=7599d5640ff2ff946a674916f605e13b18ae9650)
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
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
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![Make the most out of your Garmin Vivosmart pulse oximeter (blood oxygen saturation) feature - MyHealthyApple Make the most out of your Garmin Vivosmart pulse oximeter (blood oxygen saturation) feature - MyHealthyApple](https://www.myhealthyapple.com/wp-content/uploads/Garmin-Vivosmart-sensors-on-back.jpg)