If you’ve had a checkup, a medical professional may have clipped a device to your finger to measure your oxygen saturation (SpO2) and pulse. Until last year, that was my only experience with such ...

Oura has finally added SpO2 measurements to its Oura Ring 3 – as the final promised features land on the device. The Oura 3 launched way back last year, but some of its core features were delayed – ...