Fitbit has released an update for its Versa and Ionic lines that lets you quickly check your blood oxygen saturation. The new Fitbit SpO2 Signature watch face shows your overnight SpO2 readings, which ...

Samsung normally adds a few new things to each iteration of a handset, sometimes keeping all prior features and other times letting go of things that may not have worked. In the case of the Galaxy ...

The blood oxygen sensor featured in Apple Watch Series 6 and 7 is “not intended for medical use,” Apple says. That seems odd, considering that low blood oxygen is a serious medical condition. If the ...