Garmin ANT+ HRM-Tri Monitor

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Garmin HRM-Tri Monitor

The Garmin HRM-Tri is the triathlon heart rate monitor, with a strap that is made to be comfortable during all three legs of your race.

While you are underwater, it stores your heart rate data, sending it to a compatible Garmin device* at the end of the workout. Above the water, regardless of sport, your heart rate appears live on your watch. And during your runs, the HRM-Tri and ompatible Garmin device** measure and display advanced running dynamics: cadence, vertical oscillation, and ground contact time.

Typical uses for the HRM-Tri include open water swims, runs, bike rides, and multi-sport workouts and triathlons.

* The Garmin HRM-Swim and HRM-Tri are fully compatible with the Forerunner 920XT, fēnix 3, epix.

** The advanced running dynamics features of the HRM-Tri are compatible with the Forerunner 920XT, Forerunner 620, fēnix 3, fēnix 2, epix.


  • Records heart rate underwater
  • Supports heart rate variability and advanced heart rate features
  • Advanced running dynamics: cadence, vertical oscillation, and ground contact time
More Information
DimensionsL x W x D: 23.5”–56.0” x 1.2” x 0.5” (60.0–142.0 x 3.0 x 1.2 cm)
Manufacturer's Part #010-10997-09
Run Time10 months (Tri training 1 hour per day)
Weight2.1 oz. (59 g)