Suunto Smart Heart Rate Belt

Easy to pair and it provided a lot more analytics for my workouts.

The heart sensor belt works accurately

The heart sensor belt works great. They do wear out after a while and you don't realize it until you start consistently seeing data that simply can't be correct. You think it's the batteries and you go a couple more rounds of, 'That can't be right, my heart never gets up that high!', before someone tells you the belts go bad. It took several years for mine to wear out. When it happened, it was the belt not the sensor/transmitter. So now I have two sensors and one belt. I've decided to get another belt without the sensor for when it happens again.

Great!!