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Tech & Innovation·September 26, 2026·1 min read

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

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Large discrepancies in heart rate and calorie estimates between top-tier wearables show how immature consumer health algorithms still are. If you’re building on this data — wellness, insurance, training — treat it as noisy signals, not clinical-grade truth.