When Fitbit launched the Charge 4 fitness band, one of the features we found the most interesting was its ability to estimate users' blood oxygen saturation levels through its SpO2 monitor. Users ...

The Fitbit Charge 6, the latest addition to Fitbit's lineup of fitness trackers, has introduced a significant advancement in health monitoring with its built-in blood oxygen saturation (SpO2) feature.

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, ...