By Billy G. · Founder & Lead EditorVerified May 27 by Billy G.
Garmin HRM-Pro PlusvsWhoop Mg Sensor
Verdict: The Garmin HRM-Pro Plus excels at precise heart rate capture for training sessions with dual-band transmission and onboard storage per user tests on DC Rainmaker. The Whoop Mg Sensor leads in daily recovery metrics and continuous wear comfort but trails in peak HR accuracy during sprints according to comparisons on Reddit fitness forums. Garmin wins for dedicated athletes needing reliable exercise data while Whoop suits those prioritizing holistic wellness tracking.
How we scored itSpec verificationOwner sentimentLive pricing (4h refresh)Editorial reviewOur methodology →
Winner: Garmin HRM-Pro Plus
Garmin HRM-Pro Plus: 8.5/10
Whoop Mg Sensor: 7/10
Spec-by-spec comparison
Garmin HRM-Pro Plus
Whoop Mg Sensor
form_factor
Chest strap
Wrist or bicep band
battery_life
1 year
5 days
connectivity
ANT+ and Bluetooth
Bluetooth
storage
Up to 18 hours onboard
Cloud-based only
Garmin HRM-Pro Plus
What works
Broadcasts dual-band heart rate to multiple devices simultaneously
Includes running dynamics metrics like ground contact time
Stores data internally for phone-free sessions
What doesn't
Requires chest strap which some find uncomfortable during long wear
No sleep or recovery tracking built-in
Whoop Mg Sensor
What works
Provides daily strain, recovery, and sleep scores
Continuous 24/7 monitoring without manual start
Subscription includes coaching insights and team features
What doesn't
Requires ongoing subscription for full data access
Heart rate accuracy lower during high-intensity intervals versus chest straps