![]() 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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