Until now, the limitations of running speedometers kept you guessing your real speed. No longer! Silva introduces a running speedometer to measure speed, distance, and heart rate with 95+% accuracy. Its innovative, ultra-flexible chest strap design allows the user to wear it comfortably across the chest to measure heart rate, or as a stand alone pod when only speed and distance measurements are needed. Versatile receiver design can be worn as a wrist watch or on a lanyard for maximum flexibility of use. Plus, its 200+ hour battery life is the longest you can buy!