ANT+ 2.4 GHz and Bluetooth® Smart wireless digital speed and cadence sensor. ANT+ and Bluetooth® Smart allow simultaneous use of Trip 300 and smartphone. For use with all ANT+ and Bluetooth® Smart wireless technology enabled devices. Independently adjustable arm for precise alignment of speed and cadence sensors. Includes Bontrager wheel magnet and crank cadence band. Includes mounting strap to fit most chainstays and 2 zip ties for universal fit. Visit www.thisisant.com/directory/ for compatible ANT+ devices.