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Fitbit Unfit?

The latest gadget for serious fans of exercise might be having some serious problems.

Fitbit learned this week of a class action lawsuit that alleges its heart rate monitoring system is inaccurate.

The technology is found in several of the Fitbit models, including its popular Charge HR,

According to the suit, three different plaintiffs said they bought Fitbit devices based off the company’s advertised promise that it accurately tracked heart rates.

One individual in the suit claims she had her trainer manually count her heart rate during a workout. Her trainer recorded a heart rate of 160 beats per minute (bpm) while her Fitbit Charge HR indicated her heart rate was only 82 beats per minute, according to the filing. Two other plaintiffs are mentioned in the suit, each citing similar experiences.


Another important element in the suit tells of a board- certified cardiologist who performed testing on behalf of the plaintiffs’ law firm. He found Fitbit’s heart rate sensor consistently reported inaccurate results. The suit states the Fitbit devices often failed to record a heart rate at all or, when it did, the reading was off by an average of 24.34 bpm.

The report was first published in Fortune magazine last week and was widely reported by news outlets across the nation.

Fitbit stands by their products and strongly disagrees with the statements made in the complaint. They plan to vigorously defend themselves in the suit.

If there is good news for Fitbit, Consumer Reports backs the company.

Consumer Reports retested the devices in their labs, and determined, “Both the Fitbit Charge HR and Fitbit Surge passed our tests handily, accurately recording heart rates at everything from a leisurely walk up to a fast run,” said a spokesperson for CR.

Time will tell how this all works out. In the meantime, no one is telling you to drop your exercise program.

If you have questions or concerns about a product that you think might be potentially dangerous, you can always contact us at Theodoros & Rooth. Our over 110 years of experience includes many major cases of product liability. There is never a charge for a consultation.