Any links to online stores should be assumed to be affiliates. The company or PR agency provides all or most review samples. They have no control over my content, and I provide my honest opinion.
As much as I love my Garmin Fenix 6 and other multi-sports watches, the wrist-based optical heart rate monitoring is poor.
The accuracy will vary a lot depending on placement and the activity. For me, with things like cycling and rowing, accuracy is poor to the point of being useless. Generally, for things like rowing, it just won’t lock on to my heart rate, so a 20min 5K row on the Concept2 it won’t register more than 120bpm.
Using an external heart rate monitor will greatly improve accuracy in all activities. There are plenty of options out there, and there are a couple of things you need to consider before buying.
Garmin watches can generally use ANT+ or Bluetooth to connect to a strap, most other watch brands lack ANT+ so you will need to use a Bluetooth device.
Zwift will use Bluetooth for most devices such as phones, tablets, and Apple TV. For a PC you can use Bluetooth or ANT+, but you will need an ANT+ dongle. If you don’t have Bluetooth or ANT on your PC you can use the companion app to connect to your phone then the PC, but when I have used this in the past I have found it to be unreliable.
Then you need to decide if you want a chest or optical arm strap. The chest is, in theory, more accurate but I have never noticed much difference. Optical arm devices are generally much more convenient to use and more comfortable.
Garmin HRM-Run Heart Rate Monitor Strap – £59.95
Garmin HRM-Tri Heart Rate Monitor Strap – £73.99
Preview | Product | Rating | Price | |
---|---|---|---|---|
Garmin HRM-Run Heart Rate Monitor Strap | Buy on Amazon |
I have pooled these two together because they are very similar, the more expensive Tri model is suitable for open water swimming as well. These are only worth it if you have a Garmin device with run dynamics, and unlike any other heart rate monitor, these provide additional data about your run.
This includes real-time data for cadence, ground contact time and vertical oscillation.
There is a caveat with these, I have had two HRM-Run straps die on me, and swapping batteries does not appear to help. This is quite a common problem, with 12% of the Amazon reviews giving them a 1-star review. For me, I think the HRM-Run is still worth it, and I use it for outdoor runs only now.
Polar OH1 + Waterproof Optical Heart Rate Sensor – £54.99
Preview | Product | Rating | Price | |
---|---|---|---|---|
POLAR Unisex's OH1 N GRY Waterproof Optical Heart Rate... | Buy on Amazon |
In my opinion, the best all-round hear rate monitor. I have had the original Polar OH1 since early 2018 and it is still going strong. It charges via USB so there are no swapping batteries out so fewer gaps for water to get in and damage the device. It is small, comfortable to wear and the new plus model even has a goggle strap clip for swimming.
Garmin HRM-Dual – £47.59
Preview | Product | Rating | Price | |
---|---|---|---|---|
Garmin HRM-Dual - Premium Heart Rate Monitor Chest Strap,... | £42.95 | Buy on Amazon |
This chest strap lacks the run dynamics of the previous Gamin HRM, however, it has a claimed battery life of up to 3.5 years and it is both Bluetooth and ANT+ compatible. One feature that is handy for some, is the ability to concurrently transmit Bluetooth and ANT+ signals to different devices. So you could transmit to Zwift and a Garmin Edge/Fenix etc.
Wahoo TICKR Heart Rate Monitor – £35.75
Preview | Product | Rating | Price | |
---|---|---|---|---|
Wahoo TICKR Heart Rate Monitor, Bluetooth/ANT+ | Buy on Amazon |
I think this is the cheapest branded solution on the market and it is compatible with both Bluetooth and ANT+. With over 3K reviews on amazon and a score of 4.0, it is a popular device and well worth considering if you want a more affordable option.
Overall
I have previously recommended some more affordable options from random brands, but the accuracy of them was questionable, and I think the Wahoo chest strap is cheap enough to not worry about no-name devices.
Preview | Product | Rating | Price | |
---|---|---|---|---|
POLAR Unisex's OH1 N GRY Waterproof Optical Heart Rate... | Buy on Amazon |
I am James, a UK-based tech enthusiast and the Editor and Owner of Mighty Gadget, which I’ve proudly run since 2007. Passionate about all things technology, my expertise spans from computers and networking to mobile, wearables, and smart home devices.
As a fitness fanatic who loves running and cycling, I also have a keen interest in fitness-related technology, and I take every opportunity to cover this niche on my blog. My diverse interests allow me to bring a unique perspective to tech blogging, merging lifestyle, fitness, and the latest tech trends.
In my academic pursuits, I earned a BSc in Information Systems Design from UCLAN, before advancing my learning with a Master’s Degree in Computing. This advanced study also included Cisco CCNA accreditation, further demonstrating my commitment to understanding and staying ahead of the technology curve.
I’m proud to share that Vuelio has consistently ranked Mighty Gadget as one of the top technology blogs in the UK. With my dedication to technology and drive to share my insights, I aim to continue providing my readers with engaging and informative content.
Last update on 2024-10-15 / Affiliate links / Images from Amazon Product Advertising API