- Measures each stride to show running speed and distance
- Improve your running technique by seeing running cadence and stride length
- See how your running performance changes with Polar’s Running Index
- Compact and fits securely on your shoelaces
- Shock and water resistant, to handle demanding runs
- Compatible with iPhone 4S or newer
- Model: 91053149
Improve your running technique and performance with the Polar Bluetooth Smart Stride Sensor. This sensor works in conjunction with the Polar Beat app to record your speed, distance, and stride length. Stay on track and see your progress using the mobile app on a smartphone or tablet. Just attach the Polar Bluetooth Smart Stride Sensor to your shoe and get moving!