Garmin HRM-Dual

Great bit of kit that’s full of technical information, gives a true and accurate account rather than what the Garmin watch tells you.

I had recently purchased a Garmin Fenix 6. I've only been running in very cold temperatures and I noticed that the wrist-based heart rate monitor could become wildly inaccurate for no reason (yes, I was wearing it snug)......View More like it'd jump to 175bpm for no reason and stay there for 15 minutes, when I was obviously closer to 140. I'm a pretty experienced runner so I definitely know the difference between 175 and 140.I was a bit annoyed to have to spend another $100 on a chest-basedView Less

great

This is the chest strap to get IFF (if and only if) your main form of fitness is running. My only complaint and reason for 4 stars over 5 is that you must be in an activity mode for it to work. If I finish a run and end it on...View More the watch, my HR will show somewhere between 75 and 85 when it was more than 160 at my finish. Its like as soon as your activity is finished it reverts you back to your general activity HR.I have not had an issue with the battery as most other reviews are saying. But thatView Less

Cheaper that the ones on garmin site or other stores. Works perfectly as expected