A pulse oximeter measures your blood oxygen levels and pulse. A low level of oxygen saturation may occur if you have certain health conditions. Your skin tone may also affect your reading. Pulse ...

Oxygen is among the most frequently administered medical therapies, with a level that is commonly adjusted according to the reading on a pulse oximeter that measures patients’ oxygen saturation.

Tucked away in some Garmin watches is a sensor that enables continuous blood oxygen monitoring, a feature the company refers to as ‘Pulse Ox’. You may have seen the feature appear in menus or in ...