The Cadence sensor by Polar is a wireless sensor, the pedal turns of your bicycle per minute, with the help of a small magnet on the crank measures. he is compatible with the polar heart rate watch models: S 510, 520, S 625 X, S 710, S 710 i, S 720, 720 i, S 725, S 725 X. Supplied with mounting accessories are included.
POLAR M450 RED SPECIAL EDITION The Polar M450 Special Edition includes the H7 heart rate monitor, the adjustable front bike mount and one extra red color cover. Repeat the test regularly to learn what to expect from your heart rate and what can affect it, then adjust your training to allow your body to recover when needed.