Fitbit is replacing some Sense smartwatches over ECG reading issue

Fitbit is contacting some owners of its Sense smartwatch to offer replacements after discovering a bug affecting its electrocardiogram (ECG) readings. Users on the Fitbit forums have reported receiving emails from the company, warning that their devices are affected by an unspecified “hardware issue.” Fitbit has subsequently confirmed to The Verge that the issue specifically affects its ECG functionality. The emails ask affected users to return the smartwatch to Fitbit, and says they will be given a replacement device free of charge.

Along with stress detection and temperature tracking, the Fitbit Sense’s ECG app is one of its major differentiating features compared to Fitbit’s other recent smartwatch; the Versa 3. The ECG feature is...

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