Fitbit Sense 2 review: Health and fitness trackingīesides the cEDA sensor, ECG is the Fitbit Sense’s other premium health tool. I compared my overnight temperature variabilities on the Fitbit Sense 2 to the Apple Watch Series 8 and Oura Ring Gen 3 and found the readings were within 0.1 degrees once I established my baseline. If your skin temperature varies greatly from your baseline overnight, it could mean something is going on with your health. On the Sense 2, the skin-temperature readings inform both cEDA data and sleep tracking. ![]() Yes, the Sense 2 has skin temperature readings, which is not new for Fitbit but more relevant this year as other major smartwatch brands are adding skin temperature sensors of their own. ![]() In the Sense 2, cEDA is driven by three key data indicators: heart rate, heart rate variability (HRV), and skin temperature.
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