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 ...

Google looks to finally be enabling blood oxygen saturation (SpO2) tracking on the Pixel Watch. At least one Pixel Watch owner today has spotted an “Oxygen saturation” card in the on-device “Fitbit ...