Garmin Forerunner 255 GPS Smartwatch 46 mm Fiber-reinforced polymer Slate Gray 010-02641-00 - Best Buy
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
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Garmin Forerunner 265 Music GPS Running Smartwatch,Amoled Touchscreen, Battery Upto 13 Days, HRV Status & Advanced Sleep Monitoring, SPO2,Morning Report, Track Running, Cross Training with Aqua Band | Garmin Corporation
Garmin Forerunner 245 vs. 235: How using the Garmin 245 compares the 235 | SportTracks
Garmin Forerunner 255 Review | Coach
Garmin Forerunner 245 Music GPS watch review | Best Buy Blog
Garmin Forerunner® 245 | Running Watch
Best smartwatches that can measure blood oxygen saturation levels | Android Central
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
Tutorial – How to turn on the Pulse Ox Sleep Tracking Feature - YouTube