Fitbit Charge 4 adds GPS but doesn't work with third-party apps - CNET
Compare the Fitbit Charge 4 to the Fitbit Charge 3 - Coolblue - anything for a smile
Fitbit Charge 4 Setup (Step-by-Step) - YouTube
Wasserstein 3-in-1 Charging Station for iPhone, Airpods and Fitbit - Charge Multiple Apple Devices with This iPhone Charging Station (Black, 1 Pack) - Walmart.com
Fitbit Charge 3 vs Fitbit Charge 4: choose the right fitness tracker for you | TechRadar