Garmin HRM-Pro Plus vs Whoop Mg
Verdict: Whoop Mg wins on modern medical features and smaller size but Garmin HRM-Pro Plus provides stronger value and ANT+ compatibility for athletes. Garmin transmits real-time data via ANT+ and Bluetooth with swim storage (per Garmin specs) while Whoop Mg adds ECG and blood pressure (per 2025-05-08 release notes). The 3-year release gap favors Whoop for health insights but Garmin leads for dedicated runners.
Winner: Whoop Mg
Garmin HRM-Pro Plus: 7.5/10
Whoop Mg: 8/10
Spec-by-spec comparison
| Garmin HRM-Pro Plus | Whoop Mg | |
|---|---|---|
| Battery Life | Up to 60 hours | Up to 5 days |
| Release Date | 2024-01 | 2024-06 |
| Price (USD) | 130 | — |
| Connectivity | ANT+ and Bluetooth with swim data storage | Medical-grade ECG and blood pressure monitoring |
| Water Resistance | Up to 50 meters | Up to 100 meters |
Garmin HRM-Pro Plus
What works
- Up to 1 year battery life (per Garmin specs)
- Tool-free battery door for easy changes
- Stores and forwards heart rate data during swims or out of range
What doesn't
- Released 2022-07 so older hardware than 2025 competitors
- No ECG or blood pressure monitoring
Whoop Mg
What works
- 14+ day battery life
- 7% smaller than WHOOP 4.0
- Medical-grade ECG and blood pressure insights
What doesn't
- Requires subscription for full features
Bottom line
Our pick: Whoop Mg.
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