Motorola Bike with Speed Cadence Sensor for MOTOACTV - Retail Packaging (Discontinued by Manufacturer) Find out how fast you're travelling and peddling with wheel and crank arm magnet sensors. Spot-on data is wireless transmitted, displayed and stored directly on your MOTOACTV. Plus, you can analyze your performance on the MOTOACTV training portal. Sensor works in tandem with your bike and your MOTOACTV to provide you with precise speed and cadence data. Prevents you from receiving interfering signals from other nearby transmitters. Works with MOTOACTV and other ANT+ compatible fitness devices. Included in the Motorola retail packaging: Speed + Cadence Sensor, Wheel Magnet, Crank Arm Magnet, Quick Start Guide