Fitbit's Heart Monitor Can't Keep The Beat, Suit Says

By Christine Powell (January 5, 2016, 11:11 PM EST) -- The heart rate tracking technology in Fitbit's fitness watches is "wildly inaccurate" and doesn't work properly during intense physical activity, consumers who bought the devices said Tuesday in a proposed class action in California federal court that also claims that the company's attempt to force all complaining customers into arbitration is "unconscionable."

Kate McLellan, Teresa Black and David Urban allege that Fitbit Inc.'s PurePulse heart rate tracking devices, which are featured in two of the company's fitness watches, "consistently mis-record heart rates by a very significant margin," especially during exercise. Fitbit doesn't tell customers that the technology works properly only at...

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