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.

The Fitbit Sense 2 is rated for 6+ days of battery life, but many owners are seeing their watch die in 1–3 days — or even within hours after a firmware update. The most common culprit is the SpO2 ...

After initially appearing early for some users, an update to the Google Pixel Watch will officially roll out SpO2 monitoring data to all owners of the smartwatch. Until now, the sensor has laid ...