That's why I've searched through all the Amazon Prime Day deals to find you the best chest strap monitors I've tested that ...

The Polar H10 chest strap is as simple as can be. It has no buttons or switches, and the only opening is a battery cap for replacing the included CR2025 after about a year.

And even though there are more expensive straps out there (like the $100 Polar H10, which I've heard is great), I cannot think of a single chest strap feature I could possibly care about that I ...

Both COROS and Polar lagged slightly behind Garmin's HR peaks and valleys instead of the two chest straps leaving the armband behind. That doesn't mean Garmin's HRM 200 is more accurate, necessarily.

For the most part I also wore a Polar H10 chest strap heart rate monitor during these training sessions, connected to a second watch, ...

The comfortable chest strap has enough memory to store data from a single workout, which you can transfer to Polar Beat, the compatible app. The battery lasts up to 400 hours per charge.

We've tested and reviewed products since 1936. Read CR's review of the Polar FT7 heart-rate monitor to find out if it's worth it.

And even though there are more expensive straps out there (like the $100 Polar H10, ... Not only can you get better accuracy by wearing a chest strap heart rate monitor, ...