At least 60% or more of US consumers aged 55 years or more favor Fitbit when buying a wearable. This is due to the demand for smartwatches and fitness trackers in the relevant age ranges. However, Apple is more popular among those aged 18 to 24.
https://www.notebookcheck.net/Fitbit-s-success-in-the-wearables-market-is-due-to-its-popularity-among-older-consumers-new-study-finds.447138.0.html