Keep track of your progress during workouts with this Polar H7 heart rate sensor that features Bluetooth capability, so you can send readings to Bluetooth-compatible devices. The included chest strap adapts to your body shape for comfortable wearing.
I use this with my polar zoom bracelot, and also at the gym on equipment with blue ray to polar, which is most of it. Very responsive, accurate when compared to others in the gym. lightweight, unobtrusive, i don't even know i have it on oftentimes. it talks to my apps on iphone, ipad and macbook, keeps great records. I monitor so i know i'm doing the right excercise level, and also as a health monitor. I'm very pleased with this heart monitor strap.
What's great about it: easy to use, no set up needed, accurate