Fitbit claims the Alta HR is the slimmest wristband with a pulse tracker, and it's certainly the thinnest heart rate monitor-equipped wristband I've used so far.

Fitbit uses optical heart rate monitoring, or photoplethysmography. Unlike an ECG (electrocardiogram) that reads electrical activity, an optical heart rate monitor detects the pulse by shining a ...

"My Fitbit was saying that [my heart rate] was at 114, which is really, really low." After comparing the Fitbit heart rate monitor to those on the equipment at her gym, McLellan said she knew ...

California State Polytechnic University researchers found the heart rate monitors in Fitbit Surge and Charge HR have an "extremely weak correlation" with users' actual heart rate.

Thanks to the in-built heart rate monitor found in the likes of the Fitbit Charge 5, the new Fitbit Versa 4 and Fitbit Sense 2 (or any of the rest of the Fitbit clan) you’re able to gauge not ...

Fitbit is facing a lawsuit from a number of users who say that the company's health tracking devices can't be trusted to monitor heart rates. The plaintiffs filed a class-action lawsuit in ...

Fitbit's heart rate monitor isn't even close to accurate, says new study. Written by Clayton Guse Tuesday May 24 2016. Share. Copy Link. Facebook Twitter Pinterest Email WhatsApp.

New research shows that Fitbit devices miscalculate heart rates by as much as 20 beats per minute, but the fitness tracker leader says the study is biased.

New research shows that Fitbit devices have disturbingly inaccurate heart rate monitors, but the leader in fitness tracker devices says that the study is biased. The study was commissioned by ...

Report Questions Fitbit Heart Rate Monitor Accuracy But Fitbit said the study is "biased, baseless, and nothing more than an attempt to extract a payout from Fitbit." By Tom Brant ...