Connects to Bike Computers / Speedometers / Smart Trainers / iPhone / Android Apps and Garmin, Wahoo, Cateye, Topeak, TacX, CycleOps that use Bluetooth 4.0 BLE & ANT+ Techonolgy
Easily mounts for Speed or Cadence Option - wheel hub for Speed or crank arm for Cadence - No Magnets required
Indicator light shows S (Speed) or C (Cadence) Mode