The new smaller and lighter Suunto Foot POD wirelessly transmits speed and distance data to your Suunto t3, Suunto t4, or Suunto t6 heart rate monitor. When combined with the integrated altimeter of a Suunto t6, you'll get an even more complete picture of your performance - uphill, downhill, and on any terrain. The Suunto Foot POD is a lightweight wireless enhancement for your Suunto t3, Suunto t4, or Suunto t6 that enables you to measure and record speed and distance information in real-time. Speed limit alerts warn you if you stray above or below your personal limits, making the Suunto Foot POD the ideal tool for marathon pacing and mixed-intensity training. For interval training, the ability to capture running speed and distance, as well as automatic lap times and distances, makes the Suunto Foot POD an invaluable training companion. An easy-to-use clip firmly attaches the Suunto Foot POD to your shoelaces, keeping it in place when you're running in even the most demanding conditi