Polar Speed/Cadence Sensor Ble

SPEED SENSOR BLUETOOTH® SMART AND CADENCE SENSOR BLUETOOTH® SMART SET Boost your cycling performance with our cadence and cycling speed sensors: find out what your most efficient pedaling rate is and measure your speed and distance accurately. The sensors included in this set work with Bluetooth® Smart technology and consume only a little energy. You can later analyze your training at the Polar Flow web service. - 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.