How to charge a Fitbit Alta, and what to do if your Alta isn't charging

You can charge a Fitbit Alta fully in an hour or two by locking its charging clamp in place. Here's how to charge a Fitbit Alta or troubleshoot it.

These are all of the Fitbit models that can track your heart rate

The Fitbit Alta does not track heart rate, but many other Fitbit models do. Here are all the Fitbit trackers that have 24/7 ...