The Fitbit Sense isn’t the first Fitbit to track SpO2, or blood oxygen saturation, but its new sensors have opened up more ways for the company to connect the dots on all the data that’s being collected from your wrist. The $329 (£299, AU$499) Sense can also track temperature, respiration, heart-rate variability, take an electrocardiogram (also known as an EKG or ECG) and even measure stress. We’re all for learning about what’s going on inside our bodies, but all these wellness reports have started to feel like arcane car performance charts.
Getting a morning oxygen reading from the Fitbit Sense feels a lot like waiting for bread to bake. If you’re lucky, it arrives about an hour or so after waking up, but other days it might not show up at all. Just like a homemade loaf, the results can be inconsistent.
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