HRM-DUAL™	HRM-RUN™	HRM-SWIM™	HRM-TRI™	HRM-PRO™
Real-time heart rate transmission via ANT® connectivity (2.4 GHz) when out of water	Yes	Yes	Yes	Yes	Yes
Supports heart rate variability (HRV)	Yes	Yes	Yes	Yes	Yes
Transmits real-time heart rate and supports HRV via BLUETOOTH® technology to compatible devices and apps	Yes				Yes
Number of concurrent connections supported	ANT: No limit BLUETOOTH Low Energy: 2	ANT: No limit	ANT: No limit	ANT: No limit	ANT: No limit BLUETOOTH Low Energy: 2
Running dynamics1		Yes		Yes	Yes
Stores and forwards heart rate data for swimming or stand-alone use cases1			Yes	Yes	Yes
Swim interval heart rate stats1			Yes	Yes	Yes
Pairs with Garmin Connect™ app2					Yes
Stand-alone activity monitoring (steps, all-day heart rate, calories and intensity minutes) using Physio TrueUp					Yes
Battery life	3.5 years (using 1 hour per day)	12 months (using 1 hour per day)	18 months (swimming 3 hours per week)	10 months (tri training 1 hour per day)	12 months (tri training 1 hour per day)
Water resistance	1 ATM	5 ATM	5 ATM	5 ATM	5 ATM
Detachable module	Yes
Size range	25″–52″ (64–132 cm)	23.5″–42″ (60–106 cm) With included strap extender: 23.5″–56″ (60–142 cm)	23″–57″ (58–145 cm)	23.5″–42″ (60–106 cm) With included strap extender: 23.5″–56″ (60–142 cm)	23.5″–42″ (60–106 cm) With optional strap extender: 23.5″–56″ (60–142 cm)
Designed to stay in place during pool swimming			Yes

¹Not all Garmin wearables are compatible with this feature; check compatibility of your Garmin wearable device

²Requires app on your compatible smartphone; see Garmin.com/ble. Garmin Connect can be used to view settings and receive firmware updates. The app does not support viewing of real-time heart rate data from heart rate straps.

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