Overview
- IMTEST ranks the Charge 6 first with an overall 2.1 grade, citing extensive health tracking including ECG, SpO2, sleep and temperature sensing.
- Battery performance was measured at roughly 25 hours in sport mode and nine days in everyday use in the lab, while retail reporting pegs typical real‑world life at about four to six days.
- Google-centric features include Wallet for contactless payments, Maps navigation and YouTube Music control, which require a paired phone and, for music streaming, a paid subscription.
- The tracker is rated to 5 ATM water resistance and showed high accuracy for heart rate and GPS across 41 sport modes, though it lacks fall detection.
- Some advanced training insights and planning tools sit behind a Fitbit Premium paywall, quick replies work only with Android, and Fitbit accounts must migrate to Google by February 2, 2026.