For the FitBit Charge 4 and any other watch this affects, please add an option to store downloaded music locally on the watch (not just from Spotify, as not everyone subscribes to that) that can be listened to offline so a phone is not required (as that would undermine one of the main purposes of a watch). This is possible on Apple Watch.
Moderator Edit: Clarified subject
Join us on the Community Forums!
Community Guidelines
Learn the Basics
Join the Community!
Not finding your answer on the Community Forums?
Go to the Help Site
Contact Support