Fitbit launched its first proper smartwatch in 2017. The Ionic, along with most of its recent wearables, features a dormant SpO2 sensor that can be used for blood oxygen tracking. More users are now ...

Samsung is currently rolling out an update to the Galaxy Watch 3 that will make using the SpO2 sensor a more reliable experience. The R840XXU1BTK1 firmware update is being pushed out in Korea with a ...

The ScanWatch offers a built-in ECG and SpO2 (blood oxygenation) sensors. This means it can monitor for atrial fibrillation and sleep apnea, two subtle but often impactful health conditions. And they ...