90-day testing of 5 popular fitness watches. Real workout data. Battery vs accuracy tradeoffs.
Top picks
1. Apple Watch Series 9 ($399) – Best for iOS · ECG + crash detection.
2. Garmin Forerunner 165 ($249) – Best 21-day battery. Best run/cycle GPS.
3. Fitbit Charge 6 ($159) – Best budget. 7-day battery. Google Maps + YouTube Music.
4. Whoop 4.0 ($30/mo) – Best HRV + recovery science. No screen (intentional).
5. Garmin Fenix 7 ($699) – Best premium adventure. 2-week battery.
Use case verdict
Casual daily: Fitbit Charge 6 ($159). Runner: Garmin Forerunner 165. iPhone tight: Apple Watch S9. Recovery focus: Whoop. Adventure/multi-sport: Fenix 7.
⚠ AI-assisted research synthesis · human-edited by SUJI KIM · EU AI Act Art. 50 transparency
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