Fitbit Charge 3 vs Charge 4: Which fitness tracker should you buy?
Fitbit Charge 4 Review | PCMag
Amazon.com: Fitbit Charge 3 Fitness Activity Tracker, Rose Gold/Blue Grey, One Size (S and L Bands Included) : Sports & Outdoors
Amazon.com: Fitbit Charge 3 SE Fitness Activity Tracker, Lavender Woven, One Size (S and L Bands Included),1 Count (Pack of 1) : Sports & Outdoors
Fitbit Charge 3 review | Stuff
Amazon.com: Fitbit Charge 3 SE Fitness Activity Tracker Graphite/White Silicone, One Size (S and L Bands Included),1 Count (Pack of 1) : Sports & Outdoors