Whats the difference with the hrm-tri?

The pro and tri both store all the same information. The Tri is much more water proof. They both use Ant+ and Bluetooth. I use the tri during my 70.3, but lets be honest here, no real swimmers actually uses a heartrate monitor during practice. In college and elite level swimming, no one uses one. My Tri connects to my Rouvy app and my Cyclops bike trainer using bluetooth. I had a Pro but it stopped working after about a year, even with a battery change. My Tri has worked for over 3 years now with 1 battery change. Just make sure you have the o-ring seated correctly when you replace the battery. As a runner or cyclist, the Pro works just fine.

Can i connect this directly to my garmin connect app on my phone or will i need a garmin device like a watch?

I had problems attempting to connect this heart strap to my Garmin Connect App on my Samsung S10e phone. Thus far the connection is spotty.

Garmin faq says this does not provide real-time heart rate data to the garmin connect app. will it provide real-time heart rate data to a fēnix 3 hr?

The Garmin Connect App is where you upload your work outs. It will provide real time data to your watch

What is the difference with hrm-tri-band garmin?

This strap transmits using Bluetooth as well as ANT+ (the HRM-Tri uses ANT+ only).

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Description

🔥 Elevate every heartbeat, every stride, every swim 🏅

LONG LASTING POWER - Forget frequent battery swaps with a CR2032 cell that powers your training for up to a year, even with daily intense sessions.
ADVANCED RUNNING DYNAMICS - Unlock pro insights with cadence, stride length, vertical oscillation, and ground contact time to perfect your form and crush PRs.
SEAMLESS MULTI DEVICE SYNC - Dual transmission via Bluetooth & ANT+ keeps your heart rate data flowing to Garmin devices, fitness gear, and apps like Zwift.
SWIM READY HEART RATE TRACKING - Stores heart rate underwater and auto-syncs post-swim—perfect for triathletes and swimmers who refuse to compromise.
LIGHTWEIGHT COMFORT ALL DAY WEAR - At just 59g and slim profile, this strap feels like a second skin—comfort that keeps you focused on performance, not gear.

The Garmin HRM-PRO Premium Heart Rate Strap is a lightweight, waterproof chest strap that delivers precise heart rate monitoring and advanced running metrics. Featuring dual Bluetooth and ANT+ connectivity, it syncs seamlessly with Garmin devices and popular fitness apps. It stores heart rate data during swimming and other activities, ensuring no data loss. With a battery life of up to one year and a comfortable fit, it’s engineered for serious athletes aiming to optimize performance across multiple sports.

Specifications

Color	Black
Size	One Size
Style	HRM-Pro
Team	Garmin
Compatible with	Smartphones
Material Composition	Synthetic
Height	12 millimeters
Length	142 centimeters
Weight	0.05 Kilograms
Width	30 millimeters
Material Type	Plastic
Number of Items	1
Power Source	Battery operated
Season	Continuity
Features	Bluetooth, Waterproof
Sport	Cardio, Cycling, Exercise & Fitness, Running, Swimming
Map Type	North America
Included Components	Heart Rate Monitors
Batteries Included?	Yes
Description Pile	Lithium-Ion
Brand	Garmin
Department	Unisex
Manufacturer	Garmin Ltd.
Item model number	010-12955-00
Product Dimensions	14.2 x 3 x 1.2 cm; 59.53 g
ASIN	B085JKM9DR

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