Taking a closer look at the tech inside your wearables

There’s a new wearable tech metric in town – and it’s all about blood oxygen. It might sound complicated and a little pointless, but pulse ox can reveal conditions like sleep apnea – and help athletes recover.

Pulse ox is starting to appear on the spec sheets of the biggest smartwatches and fitness devices.
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https://www.wareable.com/wearable-tech/pulse-oximeter-explained-fitbit-garmin-wearables-340