Boost your cycling performance with our cycling speed sensor and measure your speed and distance accurately. The sensor works with Bluetooth® Smart technology and consumes only a little energy. You can later analyse your training in the Polar Flow web service.

Boost your cycling performance and find out what your most efficient pedaling rate is. The sensor works with Bluetooth® Smart technology and consumes only a little energy. You can later analyze your training at the Polar Flow web service.

• Compatible with dozens of leading fitness apps
• Small and light design with firm bike attachment
• Compatible with iPhone 4S and later, and with selected Android devices including Samsung Galaxy S3 and S4 using Android 4.3 or later.