Polar S3+ Stride Sensor Set

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About Polar S3

The Polar S3+ Stride Sensor Set comes with a new, firm shoe attachment which will show accurate speed and distance measurement. This small and lightweight sensor measures each stride you take, helping you analyze the effectiveness and efficiency of your run.

Polar S3 Features

  • Measures running speed/pace and distance
  • Helps improve running technique by telling your running cadence and stride length
  • Determines your Running Index, which tells you about your running performance
  • Shock and water resistant, handling even the most demanding runs

Polar S3 Specifications

Running speed/pace and distance
Polar RS800CX, RCX3, RCX5
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