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Garmin 010-10997-09 Access, HRM-Tri
- COMPACT AND COMFORTABLE - HRM-Tri is the smallest and lightest heart rate monitor from Garmin. Designed with rounded edges and no exposed seams, the strap remains comfortable during extended hours of training
- SWIM HEART RATE1 - Stores up to 20 hours of heart rate data during swims, then forwards it to a compatible device at the end of the session, It also sends real-time heart rate to the watch when the monitor is out of the water
- RUNNING DYNAMICS2 - Provides feedback on running form by measuring cadence, vertical oscillation and ground contact time when paired with a compatible device
- BATTERY LIFE - Lasts for 10 months (assuming 1 hour/day use) with user-replaceable CR2032 battery
- Includes - HRM-Tri, manuals, supports heart rate variability and advanced heart rate features
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From the manufacturer
HRM-Tri - Specifically designed for triathletes
Small and lightweight Heart Rate Monitor (HRM)
Garmin HRM-Tri is a small and light heart rate monitor from Garmin. Designed with soft rounded edges and no exposed seams, the strap remains comfortable during extended hours of training. It is designed to be worn when running, cycling and open water swimming. A simple bi-fold adjustment reduces elastic weight and makes sizing easy.
10 Months battery life
The battery lasts up to 10 months (assuming one hour per day use) with user-replaceable CR2032 battery. Enhance your triathlon experience by pairing HRM-Tri with Garmin Forerunner 920XT multisport watch.
- Lightweight and comfortable
- Designed for running, cycling and open water swimming.
- Stores up to 20 hours of heart rate data.
- Transfers data to your Garmin compatible device.
- Provides feedback on running form.
- Up to 10 months battery life.
- CR2032 replaceable battery
HRM-Tri provides heart rate data in all three disciplines
Stores and forwards Heart Rate Data
For triathletes who want all the data, the Garmin HRM-Tri provides heart rate information from beginning to end. The HRM-Tri stores up to 20 hours of heart rate data during swims and forwards to the Garmin Forerunner 920XT GPS multisport watch or other compatible Garmin sports watch (Garmin fenix 3 or Garmin epix) after the session. It also sends real-time heart rate to the watch when the monitor is out of the water.
In addition to standard heart rate metrics for every leg of the race, Garmin HRM-Tri provides feedback on running form and running dynamics. The HRM-Tri has an accelormeter in the module that measures torso movement when running. When paired with a compatible Garmin product such as Garmin Forerunner 920XT, Forerunner 610, fēnix 3, epix or Tactix Bravo, it measures; 1. Cadence – the number of steps per minute, 2. Vertical oscillation - the bounce in your running motion (the vertical motion of your torso measured in centimetres) and 3. Ground contact time - the amount of time in each step that your foot spends on the ground while running (measured in milliseconds).
See detailed data at Garmin Connect
See a complete picture of your activities with Garmin Connect, Garmin’s free online community where you can save, plan and share. Create workouts, training plans and goals to get the most out of your device. View detailed swim metrics, including heart rate graphs, swim pace, stroke type, mapping, and more. Instantly upload through the Garmin Connect Mobile app to share before you finish cooling down.
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So when this HRM came out I was excited because one of its capabilities (primarily for swimming, where water will block the ANT+ signal) is to record HR data when a watch/etc is out of range and then later dump it all to the watch. I am happy to report it works as advertised with my Garmin Fenix3 watch. One important thing to note is that you MUST START THE ACTIVITY ON YOUR WATCH WITH THE HRM CONNECTED (IN RANGE). When you get done, you stop the activity on your watch and it will give you the option to look for and download stored data. Sometimes I have to try a second time but I've never lost a stored workout. This HRM accurately records the R-R data that FirstBeat requires.
I've found this HRM-Tri to be more comfortable than the Garmin HRM-Run I was using before. The elastic strap part feels more robust and that, plus the silicon-like rings on the contact patches, mean this stays in place more than the HRM-Run. It's less annoying overall on long, sweaty workouts than the HRM-Run.
One downside to the HRM-Tri over the HRM-Run is that the electronic sensor part does not pop off like it does on the HRM-Run. As a result, you have to hand wash the Tri once every seven uses while the Run you can toss the strap in the wash on gentle.
I do not swim so I can't comment on that use.
Overall I'm extremely pleased with this item.
2016/01/14 edit -- I've noticed in FirstBeat Athlete that for the same runs, the HRM-Tri tends to have a noticeably higher error % than the HRM-Run. For example, on a 30-min treadmill run the Tri error rate is typically around 12-18% while the Run is 2-6%. There is no immediate obvious downside to this outcome so for now I am not docking a star on the Tri.
2016/03/25 edit -- I'm bumping down to 4 stars for two reasons. First, as mentioned in my edit above, the Tri gets a higher error rate during "connected" activities where the watch is in range the whole time. I've come to realize that FB Athlete seems to not count error periods or count them as less. The net effect is that given the same stats (same time, distance, avg HR on a treadmill) runs with the Tri seem to be rated slightly less intense which I believe is due to its higher error rate. So for normal running, I tend to stick with the HRM-Run. Second, the HRM-Tri gives very high error rates in FB Athlete (40-55%) when I use it in disconnected mode during competitive sports.
2017/11/29 edit -- About 1.5 years ago, I upgraded from the Fenix 3 to the Fenix 5s watch (the 5s is superior in every way). The Tri worked just the same with the 5s. Since the 5s has the built-in optical wrist HRM, it can be hard to make sure the Tri has connected and is being used instead of the less accurate (and without HRV/R-R data) optical sensor. Unfortunately, almost exactly two years after I purchased the Tri, it has to be replaced. It's chewing through the CR2032 battery every couple days with perhaps 6-10 hours of use. I tried a fresh new set of spare batteries to make sure my original spares hadn't gone bad. I followed the instructions for care and it's definitely been showing signs of wear and tear. Overall I'm still happy and will be replacing it with another one.
By the way, the battery is very difficult to change, much to difficult for the price of the item.
I'e had this problem with other Garmin devices. I've had older heart rate monitors that did the same thing; after changing the battery, the devices won't work Since I started triathlon training 4 years ago, I've had 5 HR monitors because of this. Same thing happened with the foot pod.
Honestly, these are way too expensive to have to buy two a year. So, consider buying another brand.
Update it is now 1 year and 2 months since I purchased this HRM .. During a recent run the device informed me the battery was low .. I thought that was odd since I had replaced it maybe 2 months ago, I went for a bike ride the next day... apparently that last run was all that it had left in the battery... After replacing the battery it didn't register with my watch or my bike computer ... I took a battery from my cadence sensor and tried it .. still not working. I understand this device has to endure a lot of sweat and movement but seriously .. 1 year and 2 months or 287 hours and 23 mins of use, I have many other garmin devices and this is the first one to disappoint me.