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Capture speed and cadence data and send it to your smartphone or bike computer with the Bontrager Interchange Digital Combo sensor. It transmits via Bluetooth® Smart and ANT+ 2.4 GHz wireless signals.[list][*]This wireless digital speed and cadence sensor transmits via both Bluetooth Smart and ANT+ 2.4 GHz for compatibility with a wide range of devices[*]Transmission via both Bluetooth Smart and ANT+ 2.4 GHz also allows simultaneous use with both your computer and smartphone (not included)[*]Independently adjustable arm for precise alignment of speed and cadence sensors