POLAR S3+ Stride Sensor

S3+ stride sensor comes in black with a new, firm shoe attachment which guarantees 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.

• 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

Compatible with:

• RCX5
• S3+ Holder
• RS800CX Multisport GPS
• RS800CX