Garmin speed cadence sensortracking your speed and cadence has never been so easy garmins speed cadence sensor is really simple and straightforward to fit and install all you have to do is attach garmins speed sensor to the front or rear hub and it will self calibrate with your garmin edge for you cadence sensor simply attach to the crank arm lightweight compact and durable this garmin speed cadence sensor will provide current average and maximum speed and cadence data for a com