This teardown report maps Fitbit's shift in technology to create a smart watch-like fitness tracker.
Trends in Use of Hardware Components
Surge was Fitbit's first fitness tracker that looked like a smart watch. It included specific components that set a precedent to Fitbit's later fitness trackers, especially with regard to sensors and GPS tracking.
Decapsulated and die-level imaging of key components and a study of their inclusion in other Fitbit devices.