The Charge 5 features GPS technology ... that let you know when you have an irregular heart rhythm. The Fitbit Charge 4 may look similar to its predecessor, but this brand new fitness tracker ...

Owners of two popular Fitbit activity trackers have been left without a key metric for months with no resolution in sight.

When Fitbit launched the Charge 5, the device dropped the altimeter previously found on the Charge 4. Despite some user complaints, the sensor did not make a reappearance on the Charge 6.

A fitness tracker is a great way to help you reach your fitness goals, but if you are on a budget, here are six under $100 that actually work.

Fitbit Comparison Compare Fitness Trackers Smartwatches. Which Fitbit Do I Have How to Identify Your Fitbit Model. Which Fitbit shoul ...