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2. Fitbit Charge 6 brings better heart rate tracking and deeper ...

   www.aol.com/finance/fitbit-charge-6-brings...

   Fitbit is rolling out the latest version of its top-of-the-line fitness tracker: the Charge 6. Available Oct. 12 for $159, the Charge 6 comes with updated heart rate tracking that promises ...

3. I wore the Fitbit Charge 6 for weeks — here's what to know

   www.aol.com/news/wore-fitbit-charge-6-weeks...

   Fitbit Charge 6 $ at Amazon. Fitbit Charge 6 $ at Walmart. Fitbit Charge 6 $ at Best Buy. The Fitbit Charge 6 ($159.95) is a small fitness watch that can track your heart rate, daily steps ...

4. Fitbit - Wikipedia

   en.wikipedia.org/wiki/Fitbit

   A 2019 study found that the Fitbit Charge 2 accurately measures the average heart rate of healthy adults during sleep, and that it is most accurate for medium range of heart rate. However, the same study found that Fitbit Charge 2 relative to EEG, overestimated sleep efficiency by about 4%, but there was no difference in measured total sleep time.

5. Fitbit heart data reveals its secrets [Video] - AOL

   www.aol.com/news/exclusive-fitbits-150-billion...

   Fitibit's wristbands have collected 150 billion hours' worth of heart-rate data from people around the world. For the first time, the company offered a look inside that data, to see how lifestyle ...

6. Fitness tracker - Wikipedia

   en.wikipedia.org/wiki/Fitness_tracker

   The Fitbit Charge 3 activity tracker. A fitness tracker or activity tracker is an electronic device or app that measures and collects data about an individual's movements and physical responses, towards the goal of monitoring and improving their health, fitness, or psychological wellness over time.

7. Heart rate monitor - Wikipedia

   en.wikipedia.org/wiki/Heart_rate_monitor

   A heart rate monitor (HRM) is a personal monitoring device that allows one to measure/display heart rate in real time or record the heart rate for later study. It is largely used to gather heart rate data while performing various types of physical exercise. Measuring electrical heart information is referred to as electrocardiography (ECG or EKG).