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Garmin HRM Tri Heart Rate Strap


RRP: CA$166.99

Save: 28%

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Availability: In stock Usually dispatched within 24 hours


Enhance your triathlon experience by pairing HRM-Tri with your Forerunner® 920XT1. The HRM-Tri stores heart rate data when underwater, then forwards it to the 920XT. Our smallest and lightest module fits within the width of the strap. Its soft, rounded edges and covered seams make the strap super-comfortable out of the water, too.

Running Dynamics

HRM-Tri also has an accelerometer in the module that measures torso movement to calculate 3 running metrics:2

  1. Cadence — the number of steps per minute. It displays the total steps (right and left combined).
  2. Vertical oscillation — the bounce in your running motion. It displays the vertical motion of your torso (measured in centimeters). HRM-Tri is compatible with several other fitness products but will only display heart rate when paired.
  3. Ground contact time — the amount of time in each step that your foot spends on the ground while running (measured in milliseconds).

Example of Typical Uses



Bike rides, runs, bricks

Pool swims

Open water swims

Open water swims

Triathlon competition (open water swim)

Triathlon competition (pool swim), triathlon kit not required

Triathlon competition (with pool swim) while wearing triathlon kit

Runs or bike rides as part of a multi-sport activity that includes a pool swim

¹Forerunner 920XT, epix™, fēnix® 3
²Running dynamics features are available only on the Forerunner 620/920XT and fēnix 2/3. HRM-Tri is compatible with several other fitness products but will only display heart rate when paired.

What’s in the Box?

  • HRM-Tri
  • Manuals

Technical Specification:

  • Unit dimensions (LxWxD): 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: 49 g
  • Size adjustment: Bi-fold
  • Sizing range: 60.0 - 142.0 (cm)
  • Battery: CR2032
  • Battery life: 10 months (Tri training 1 hour per day)
  • Water rating: 5 ATM
  • 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

Product Details

  • Garmin

Delivery & Returns

Express Delivery Available

If ordered before 8pm, delivered by courier next working day. Available on orders placed before 8pm (2pm weekends and Bank Holidays) for delivery next business day. Applies to most delivery addresses within mainland UK.

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: In stock | Usually dispatched within 24 hours

Please remember to add postal time (2-3 working days) to obtain a complete estimate of delivery to your door.

How will I know it has been sent?

You will receive an email to confirm when your item has been sent.

You can also check the status of your order and individual items by accessing My Account details and following the prompts.

Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.

It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.

If I'm not completely happy with my item?

Please see our returns policy.

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Garmin HRM Tri Heart Rate Strap

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Garmin HRM Tri Heart Rate Strap