After workouts, I typically run the analysis on the Firstbeate ATHLETE software. Errors were getting as high as 50% after each workout. I also noticed that the rubber part of the electrodes around the heart rate sensor (the oval shape) decreased in height from wearing it over 1 year. This made it harder to detect my HR, thus more errors. With this new Suunto Dual HR strap, errors are always less than 10%, just as it was when I first used the original comfort belt.
I could have gotten away with replacing the Suunto strap alone for about $35 dollars Suunto Comfort Strap as I had hoped having the most up to date Suunto HR strap would benefit me more. It's basically the same as the Comfort strap, with the addition of the ANT/Coded feature, which blocks other HR frequencies from both types. Get more detail about Suunto Dual Heart Rate Belt.
