Garmin Speed and Cadence Sensor: Overview at gpscity.com - 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
Garmin Speed & Cadence Sensors V2 with ANT+/Bluetooth Smart: In-Depth Review | DC Rainmaker
Garmin Bike Speed Sensor 2 and Cadence Sensor 2 - GPSCentral.ca
Garmin Speed & Cadence Sensors V2 with ANT+/Bluetooth Smart: In-Depth Review | DC Rainmaker