One of the the world’s first, the Polar Stride Sensor Bluetooth Smart connects directly to iPhone 5 or 4S to deliver speed, distance and run cadence. The sensor provides all the data needed for running with the exception of heart rate and you can add a Polar H7 heart rate monitor to receive that data. A great way to realize the full potential of the Smart Stride Sensor is to pair it with the Polar H7 Bluetooth Smart Heart Rate Sensor, an armband for iPhone and a tube of heart rate monitor electrode cream.
The Polar Stride Sensor Bluetooth Smart comes with a Polar S3+ Stride Holder that threads directly into the show laces. It is worth having a couple of these if you have more than one pair of running shoes so you don’t have to re-thread the pod, simply move it from holder to holder.
The Polar Bluetooth Stride Sensor also has a user changeable battery and complete stride sensor calibration instructions are available on the Polar website.
For folks that bring an iPhone 5 or 4S with them for exercise, or have to have it for work, this is a good solution. Competitive runners will be much more apt to stick with GPS watches.