Fitbit is replacing Sense smartwatch due to an issue with the electrocardiogram (ECG) feature. Some affected users said the company proactively contacted them about a replacement due to the issue. Fitbit found an issue in a very limited subset of their initial Fitbit Sense shipments devices globally that could cause the ECG App to default to an Inconclusive result during readings. The company able to identify the impacted devices upon setup and are immediately reaching out to these users to provide them with a new replacement device free of charge. No other Fitbit devices are impacted and future shipments of Sense devices will not be affected by this issue informed by the company. The ECG feature can use to assess your heart rhythms for a condition called atrial fibrillation, is one of the key selling points of the smartwatch. Fitbit rolled out the ECG app in October.
The issue confirmed to the Verge, Fitbit says that some Sense owners have a hardware issue which affects the ECG functionality of the smartwatch. The company has been sending emails to affected users with the offer of a full hardware replacement completely free of charge.