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Questions & Answers
Does this pair with the Garmin Instinct watch? Expert Answer

Compatibility is as follows:
D2 Series: D2 Bravo, Charlie, Delta, Delta PX, and Delta S
Descent Mk1
epix
fenix 3 Series: fenix 3, 3 HR, and 3 Sapphire
fenix 5 Series: fenix 5, 5 Plus, 5S, 5S Plus, 5X, and 5X Plus
fenix Chronos
Forerunner Series: Forerunner 630, 735XT, 920XT, and 935
quatix Series: quatix 3, 5, and 5 Sapphire
tactix Series: tactix Bravo and Charlie
VIRB 360

by Todd, Gear Expert, September 17, 2021

Product Discontinued by Manufacturer

Garmin HRM-Tri has been discontinued by Garmin and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Health & Fitness yourself to try and find the perfect replacement for you!

Product Info for Garmin HRM-Tri

Heart Rate Data in 3 Disciplinesimage

Specifically designed for triathletes

Our smallest and lightest heart rate monitor (HRM)

Comfortable, easily adjustable strap

Stores and forwards heart rate data to Forerunner 920XT

Extensive Running Dynamics

When running, this pairing allows your compatible wearable to report 6 running dynamics metrics: cadence, stride length, ground contact time, ground contact time balance, vertical oscillation and vertical ratio.

Features of Garmin HRM-Tri

  • Physical Specifications
  • Unit dimensions (LxWxD): 23.5"-56.0" x 1.2" x 0.5" (60.0 - 142.0 x 3.0 x 1.2 cm)
  • Weight: 2.1 oz (59 g)
  • Module size: 29.4 x 51.4 x 8.5 mm
  • Module weight: 1.7 oz (49 g)
  • Size adjustment: Bi-fold
  • Sizing range: 23.5"-56.0" (60.0 - 142.0 cm)
  • Battery: CR2032
  • Battery life: 10 months (Tri training 1 hour per day)
  • Water rating: 5 ATM
  • Additional
  • ANT+ heart rate: yes
  • Supports heart rate variability and advanced heart rate features: yes
  • 2.4 GHz ANT wireless communication protocol: yes
  • Running dynamics: yes
  • Stores and forwards heart rate: yes
  • Swim interval heart rate statistics: yes
  • Non-slip design for pool swimming: no
  • Pool chemical resistant: no

Package Contents:

  • Garmin HRM-Tri
  • HRM-Tri
  • Strap Extender
  • Manuals

Garmin HRM-Tri Unavailable & Discontinued Models

List of Unorderable Models

  • Garmin Heart Rate Monitor Tri, 010-10997-09 , MPN: 010-10997-09 , UPC: 753759108816 , Code: GA-HRM-GARHRSHRMTRI-010-10997-09
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Last updated 2026-09-11 UTC.