Garmin HRM-Run is a new heart rate monitor and chest strap technology designed specifically for the Garmin Forerunner 620 watch. It gives you not only real-time heart rate but also instant feedback about your running form.
A built-in accelerometer in the module will measure your torso movement in order to calculate three distinct running metrics as follows:
1.) Running cadence as the number of steps per minute for both feet,
2.) Vertical oscillation measures the vertical energy, or bounce, in your running motion by displaying the vertical measurement of your torso in centimeters, and
3.) Ground contact time which is the amount of time your feet spend on the ground for each stride measured in milliseconds.
This technology is so cool and the only company that has it at present is Garmin and the only product that has this is the Garmin Forerunner 620.
--Rusty Squire, email@example.com, copyright 2013