POLAR 91047327 Speed and Cadence Sensor Bluetooth Smart Set

POLAR 91047327 Speed and Cadence Sensor Bluetooth Smart Set.  These are lightly used with plenty of life left in the batteries.  Guaranteed to work with long battery life left.  This is for the speed and cadence bluetooth sensors with rubber mounting boots and the magnets that are needed.  The boots are fresh with no cracking.  When the magnets are passed by the sensors the red lights light up.  I have three sets of these to sell.  All sets are identical.