Apple Watch Series 12 vs Garmin Fenix 9 Pro: Some big HR and calorie differences

Initial workout tests comparing the Apple Watch Series 12 and the Garmin Fenix 9 Pro reveal significant discrepancies in calorie tracking and heart rate measurements. While the Apple Watch Series 12 shows distinct differences against Garmin's top model, users are also evaluating the Garmin Fenix 9 against the Fenix 8. This comparison helps consumers determine which sport smartwatch provides the best upgrade path and accuracy for their specific fitness tracking needs and daily health monitoring goals.