What should I know about health metrics in the Fitbit app?
Fitbit Charge 4 now tracks blood oxygen levels with new update
First Look: Fitbit Charge 3 Activity Tracker with SpO2 Sensor & Sleep Disturbance Tracking | DC Rainmaker
Fitbit rolls out SpO2 blood oxygen monitoring feature: How it works, use cases and more | Technology News,The Indian Express
Fitbit Charge 3 Review | PCMag
First Look: Fitbit Charge 3 Activity Tracker with SpO2 Sensor & Sleep Disturbance Tracking | DC Rainmaker
How do I track blood oxygen saturation (SpO2) with my Fitbit device?
How to use your Fitbit to monitor your blood oxygen levels - The Verge
Fitbit Charge 3 announced: Price, features, availability, and more!
Fitbit Versa 3 Health & Fitness Smartwatch W/ Bluetooth Calls/Texts, Fast Charging, GPS, Heart Rate SpO2, 6+ Days Battery (S & L Bands, 90 Day Premium Included) International Version (Blue/Gold)