The Running Dynamics Pod can be easily clipped to the belt to measure the running dynamics you need to beat yesterday. It allows you to run without a heart rate monitor chest strap. After pairing with a compatible smartwatch, just clip it to the back and center of the belt to start running. View and analyze important running metrics such as cadence, stride length, ground contact time and balance, vertical vibration and vertical ratio. These biomechanical measurements can help you understand how you run, so you can perform better on the day of the race.