Fitbit announced the Charge 4 this month last year as its most advanced fitness tracker with built-in GPS and SpO2. Data from the latter sensor was previously only accessible in the Fitbit app, but ...

If you own a Fitbit Charge 3, Ionic, Versa, Versa Lite, or Versa 2, it's time to check the app for a new Estimated Oxygen Variation Graph. The graph will display your blood's oxygen level, using the ...

With this multipurpose health testing device, you can measure your body temperature and blood oxygen saturation, take an ECG, and listen to your heart and lungs with a pair of headphones.

Fitness tech companies, particularly Fitbit and Garmin, want to monitor the level of oxygen in your blood. It’s a metric that could help spot signs of sleep apnea and other breathing-related problems, ...