A look at Garmin's new ANT+ Speed & Cadence magnet-less sensors | DC Rainmaker
Garmin Speed Sensor Installation - YouTube
Garmin Bike Speed 2 and Cadence Sensor 2
Garmin Speed sensor 2 & cadence sensor 2 - measurement and storage of speed, cadence, distance via ANT+ or Bluetooth LE. Mount on wheel hub. : Amazon.co.uk: Sports & Outdoors